Map:- 100 Afrotropical ecoregions
- 100 Altiplano Cundiboyacense
- 100 Aptian Stage
- 100 Deltaic deposits
- 100 Geologic formations of Argentina
- 100 Lists of earthquakes by year
- 100 Prehistoric people in popular culture
- 100 Shoshone National Forest
- 10 10th millennium BC
- 10 16th century earthquakes
- 10 1931 earthquakes
- 10 1968 earthquakes
- 101 Fossil taxa described in 2010
- 101 Mediterranean islands
- 101 Sedimentary rocks
- 10 2004 earthquakes
- 102 Nude beaches
- 102 Sawtooth National Forest
- 103 Limestone
- 103 Montane forests
- 104 Glaciology
- 104 Indomalayan ecoregions
- 104 Transitional fossils
- 104 Triclinic minerals
- 104 Valleys and canyons on Mars
- 105 Carbonate minerals
- 105 EDGE species
- 105 Karoo
- 10 5th millennium BC establishments
- 106 Mount Baker Snoqualmie National Forest
- 106 Rivers of Switzerland
- 10 6th century BC
- 107 Films set on beaches
- 107 Fossil taxa described in 2011
- 107 Islands of the Adriatic Sea
- 10 7th millennium BC
- 108 Grasses of North America
- 108 Nearctic ecoregions
- 108 Paleozoic life of Quebec
- 108 Water pollution
- 109 Grasses of Africa
- 109 Hudson River
- 109 Succulent plants
- 10 9th millennium BC establishments
- 10 ACT River Basin
- 10 Afan Valley
- 10 Allagash River
- 10 Allen Formation
- 10 Alzette
- 10 Amateur paleontologists
- 10 Anacostia River
- 10 Anahim Volcanic Belt
- 10 Ancient basilicas in Rome
- 10 Anguilla related lists
- 10 Anticoagulant rodenticides
- 10 Antileprotic drugs
- 10 Aphanitic rocks
- 10 Aquifers in the United States
- 10 Aral Sea
- 10 Arapaho people
- 10 Archaea genera
- 10 Ashley National Forest
- 10 Atmospheric electricity
- 10 Awash River
- 10 Bahariya Formation
- 10 Balboa Peninsula
- 10 Barra Isles
- 10 Barra
- 10 Basins of Africa
- 10 Bays of China
- 10 Bays of Cuba
- 10 Bays of the Indian Ocean
- 10 Beaches of Denmark
- 10 Beaches of Ecuador
- 10 Beaches of Florianópolis
- 10 Beaches of Norway
- 10 Beaverhead Deerlodge National Forest
- 10 Belle Isle Park (Michigan)
- 10 Benue River
- 10 Bioremediation
- 10 Biostratigraphy
- 10 Biota of the Atlantic Ocean
- 10 Bituminous sands of Canada
- 10 Blasket Islands
- 10 Bodies of ice of Graham Land
- 10 Bornhardts
- 10 Brahmaputra River
- 10 Burlington, Ontario
- 10 Caddoan peoples
- 10 Calabria
- 10 Campus Martius
- 10 Canyons and gorges of Australia
- 10 Canyons and gorges of Canada
- 10 Cathedral City, California
- 10 Caves containing pictograms in Spain
- 10 Caves of Romania
- 10 Caves of the Czech Republic
- 10 Caves of the Philippines
- 10 Caves of Vietnam
- 10 Chattian Stage
- 10 Chimbu Province
- 10 Cisuralian Series of North America
- 10 Climate change and the environment
- 10 Climate communication
- 10 Coast Mountains
- 10 Colonsay
- 10 Coos Bay Mosquito Fleet
- 10 Cretaceous Bolivia
- 10 Cretaceous Uruguay
- 10 Currents of the Indian Ocean
- 10 Cuts (earthmoving)
- 10 Dampier Archipelago
- 10 Dams in the Indus River basin
- 10 Dardanelles
- 10 Dead wood
- 10 Deep ecologists
- 10 Depressions of Russia
- 10 Desert Hot Springs, California
- 10 Devonian Bolivia
- 10 Diamond cutting
- 10 Dikes
- 10 Dinosaur reproduction
- 10 Drainage basins of North America
- 10 Drainage basins of the Bering Sea
- 10 Dugi Otok
- 10 Dutch paleontologists
- 10 Earthquakes in Bangladesh
- 10 Earthquakes in Nepal
- 10 Earthquakes in Quebec
- 10 Earthquakes in Romania
- 10 East China Sea
- 10 Ecological theories
- 10 Economy of Africa
- 10 Ecoregions of Egypt
- 10 Ecoregions of Italy
- 10 Ecoregions of Kenya
- 10 Ecoregions of Namibia
- 10 Ecotoxicology
- 10 Ellis Island
- 10 Elsinore Trough
- 10 Emu Bay Shale
- 10 Endlings
- 10 Endorheic basins of Africa
- 10 Endorheic lakes of South America
- 10 Environmental effects of pesticides
- 10 Environmental impact of the coal industry
- 10 Euclid, Ohio
- 10 Events in the geological history of Earth
- 10 Extinct volcanism
- 10 Falkland Islands related lists
- 10 Feather Headwaters
- 10 Fictional deserts
- 10 Fishlake National Forest
- 10 Fish migrations
- 10 Fjords of Russia
- 10 Floodplains of Europe
- 10 Fossils of Panama
- 10 Fossils of the Netherlands
- 10 Fossils of Tunisia
- 10 Fossils of Turkey
- 10 Fossil taxa described in 1822
- 10 Fossil taxa described in 1850
- 10 Fossil taxa described in 1853
- 10 Fossil taxa described in 1854
- 10 Fossil taxa described in 1861
- 10 Fossil taxa described in 1867
- 10 Fossil taxa described in 1897
- 10 Fossil taxa described in 1955
- 10 French Broad River
- 10 Freshwater ecoregions of Africa
- 10 Garnet group
- 10 Gemstone cutting
- 10 Geography of Coahuila
- 10 Geography of Saint Helena
- 10 Geologic formations of Niger
- 10 Geologic formations of Scotland
- 10 Geologic formations of Switzerland
- 10 Geologic formations of Zambia
- 10 Geophysical imaging
- 10 Geophysics stubs
- 10 German geodesists
- 10 Glacial deposits
- 10 Glaciers of Tanzania
- 10 Great Lakes region (U S )
- 10 Great Lakes region (U.S.)
- 10 Guernsey
- 10 Gypsum caves
- 10 Haul trucks
- 10 Headlands of Antarctica
- 10 Hiddensee
- 10 Highest points of Norwegian counties
- 10 Hills of Slovenia
- 10 History of the Maldives
- 10 History of the New Zealand outlying islands
- 10 History of the Persian Gulf
- 10 History of Vanuatu
- 10 History of Zacatecas
- 10 Holy wells
- 10 Hotspots of the Atlantic Ocean
- 10 Hot springs of South Africa
- 10 Human extinction
- 10 Hypothetical impact events
- 10 Icebreakers of the United Kingdom
- 10 Ice caps
- 10 Ice storms in the United States
- 10 Impact craters of Brazil
- 10 Impact craters of Russia
- 10 Impact craters on Jupiter's moons
- 10 Induan Stage
- 10 Initial points
- 10 Inselbergs of Europe
- 10 Iron ore deposits
- 10 Islands of Four Mountains
- 10 Islands of Mozambique
- 10 Islands of Mumbai
- 10 Islands of Saint Petersburg
- 10 Islands of the East Siberian Sea
- 10 Islands of the Houtman Abrolhos
- 10 Isle of Man related lists
- 10 Japanese rock climbers
- 10 Jiu Valley
- 10 Jordan River basin
- 10 Kennebec River
- 10 Kent catchment
- 10 Kingdom of Sicily
- 10 Kings River (California)
- 10 Krishna River
- 10 Lagoons of Asia
- 10 Lake Chad
- 10 Lake Kyoga
- 10 Lake Okeechobee
- 10 Lakes of Chad
- 10 Lakes of Egypt
- 10 Lakes of Finland
- 10 Lakes of New Zealand
- 10 Lakes of Slovakia
- 10 Lakes of the Pirin
- 10 Lakes of Tunisia
- 10 Lakes of Ukraine
- 10 Landforms of Aichi Prefecture
- 10 Landforms of Aragon
- 10 Landforms of Arequipa Region
- 10 Landforms of Benguet
- 10 Landforms of Buenos Aires Province
- 10 Landforms of Chalkidiki
- 10 Landforms of Córdoba Province, Argentina
- 10 Landforms of Corinthia
- 10 Landforms of Epirus (region)
- 10 Landforms of Gilan Province
- 10 Landforms of Gujarat
- 10 Landforms of Haskovo Province
- 10 Landforms of Innlandet
- 10 Landforms of Iwate Prefecture
- 10 Landforms of Jalisco
- 10 Landforms of Kyustendil Province
- 10 Landforms of Laconia
- 10 Landforms of Lanao del Sur
- 10 Landforms of Louisville, Kentucky
- 10 Landforms of Milos (regional unit)
- 10 Landforms of Naxos (regional unit)
- 10 Landforms of Nebraska
- 10 Landforms of New South Wales
- 10 Landforms of North Holland
- 10 Landforms of Palawan
- 10 Landforms of Saxony Anhalt
- 10 Landforms of Stara Zagora Province
- 10 Landforms of Taipei
- 10 Landforms of the Northern Cape
- 10 Landforms of the Northern Territory
- 10 Landforms of Varna Province
- 10 Landforms of West Azerbaijan Province
- 10 Landforms of Zamboanga del Sur
- 10 Lassen National Forest
- 10 Leech Lake
- 10 Lesbos
- 10 Lewis and Clark National Forest
- 10 Limestone sculptures in the United Kingdom
- 10 Limmat
- 10 Liquefied natural gas terminals
- 10 Lists of bodies of water
- 10 Lists of ecoregions by country
- 10 Lists of landforms of Mexico
- 10 Lists of landforms of the Philippines
- 10 Lists of Ramsar sites
- 10 Lists of river tributaries
- 10 Living dinosaurs in fiction
- 10 Lopingian life
- 10 Loyalty Islands
- 10 Maevarano fauna
- 10 Magnetic minerals
- 10 Mani Peninsula
- 10 Marine geologists
- 10 Marshall Islands related lists
- 10 Mary River (Queensland)
- 10 Meadows
- 10 Megatsunamis
- 10 Mensae on Mars
- 10 Mesas
- 10 Mesoamerican Barrier Reef System
- 10 Mesozoic paleontological sites of South America
- 10 Meteorites found in Australia
- 10 Middle earth
- 10 Military history of the Bay of Biscay
- 10 Mining culture and traditions
- 10 Mobile Bay
- 10 Mohave tribe
- 10 Morrison Formation
- 10 Mountain passes of Albania
- 10 Mountain passes of Vietnam
- 10 Mountain ranges of Austria
- 10 Mountain ranges of La Paz County, Arizona
- 10 Mountain ranges of the Sierra Nevada (U S )
- 10 Mountain ranges of the Sierra Nevada (U.S.)
- 10 Mountain ranges of Tibet
- 10 Mountain rescue
- 10 Mountains of Bolivia
- 10 Mountains of Finland
- 10 Mountains of Lebanon
- 10 Mountains of Malaysia
- 10 Mountains of Suriname
- 10 Mountains of the United States
- 10 Murrumbidgee River
- 10 Namib Naukluft National Park
- 10 Natural regions of the South German Scarplands
- 10 Nature conservation in Scotland
- 10 Nauru related lists
- 10 Neogene United States
- 10 New York (state) populated places on the Saint Lawrence River
- 10 Nine Sisters
- 10 Oceanic basins of the Arctic Ocean
- 10 Ochoco National Forest
- 10 Oil bearing shales in Canada
- 10 Oil fields of Iraq
- 10 Oil reserves by country
- 10 Optical mineralogy
- 10 Orjen
- 10 Palau related lists
- 10 Paleogene Bolivia
- 10 Paleontological protected areas in the United States
- 10 Paleontology in Austria
- 10 Paleontology in Idaho
- 10 Paleontology in Illinois
- 10 Paleontology in Maryland
- 10 Paleontology in Newfoundland and Labrador
- 10 Paleontology in Ontario
- 10 Paleontology in Serbia
- 10 Paleontology in South Korea
- 10 Paleontology timelines
- 10 Paleozoic
- 10 Palk Strait
- 10 Palynology
- 10 Peligran
- 10 Pemberton Valley
- 10 Peninsulas of Italy
- 10 Permian System of North America
- 10 Petrobras oil and gas fields
- 10 Plains of Europe
- 10 Plains of New Zealand
- 10 Plains Village period
- 10 Plant ecology
- 10 Plateaus of Asia
- 10 Plateaus of the Pacific Ocean
- 10 Pleistocene Ecuador
- 10 Pleistocene paleontological sites of Australia
- 10 Pleistocene Panama
- 10 Polyextremophiles
- 10 Populated places in the fjords and channels of Chile
- 10 Prebiotic chemistry
- 10 Prehistoric angiosperms
- 10 Prehistoric trees
- 10 Proterozoic geochronology
- 10 Quartz varieties
- 10 Quaternary United States
- 10 Radio stations in Zacatecas
- 10 Rainbow
- 10 Reefs of China
- 10 River Cam
- 10 River deltas of the United States
- 10 River Seine
- 10 Rivers of Bristol
- 10 Rivers of Equatorial Guinea
- 10 Rivers of Lebanon
- 10 Rivers of Liberia
- 10 Rivers of Moldova
- 10 Rivers of Philadelphia
- 10 Rivers of the Dominican Republic
- 10 Rivers of Tunisia
- 10 Rivers of Washington, D C
- 10 Rivers of Washington, D.C.
- 10 River valleys of India
- 10 Rock formations of Canada
- 10 Romanija plateau
- 10 Rupelian Stage
- 10 Russian mineralogists
- 10 Rwenzori Mountains
- 10 Saint John River (Bay of Fundy)
- 10 Salt domes
- 10 Sandboarding locations
- 10 Sandstone sculptures
- 10 Santa Rosa Mountains (California)
- 10 Sea of Marmara
- 10 Seven Second Summits
- 10 Sheboygan, Wisconsin
- 10 Show caves in China
- 10 Sinkholes
- 10 Sinkholes of Mexico
- 10 Siuslaw National Forest
- 10 Songs about Japan
- 10 Songs about the United Kingdom
- 10 South West England
- 10 Soviet paleontologists
- 10 Speed skating
- 10 Spratly Islands
- 10 Springs of China
- 10 Springs of Israel
- 10 Sterling, Colorado
- 10 Stop locks
- 10 Subglacial lakes
- 10 Submarine communications cables in the Indian Ocean
- 10 Submarine communications cables in the Mediterranean Sea
- 10 Sulfur oxyanions
- 10 Tailings dams
- 10 Taitao Peninsula
- 10 Tarns of the Black Forest
- 10 Tasman Sea
- 10 Temblor Range
- 10 Thracian Sea
- 10 Tidal islands of France
- 10 Tigris River
- 10 Traditional mining
- 10 Transocean
- 10 Triassic United States
- 10 Triassic volcanism
- 10 Tributaries of the Ablach
- 10 Tributaries of the Adige
- 10 Tributaries of the Gila River
- 10 Tributaries of the Kaveri River
- 10 Tributaries of the Kolyma
- 10 Tributaries of the Krishna River
- 10 Tristan da Cunha
- 10 Tsavo National Park
- 10 Urban oil fields
- 10 Uric acid
- 10 U S Interior Highlands
- 10 U.S. Interior Highlands
- 10 Valleys of Iceland
- 10 Valleys of Mexico
- 10 Valleys of Sweden
- 10 Volcanism of Japan
- 10 Volcanism of Mexico
- 10 Volcanoes of Chad
- 10 Volcanoes of Chile
- 10 Volcano Islands
- 10 Waianae Range
- 10 Walking with
- 10 Walking with...
- 10 Washes of Arizona
- 10 Waterfalls of China
- 10 Waterfalls of South Africa
- 10 Weather fronts
- 10 Whitby, Ontario
- 10 Wichita tribe
- 10 Writers of fiction set in prehistoric times
- 10 Yakima River
- 10 Zinc mining companies
- 10 Zittau Mountains
- 110 Great Divide of North America
- 11 1976 earthquakes
- 11 1992 earthquakes
- 11 1997 earthquakes
- 111 Flora of the Chihuahuan Desert
- 111 Protected areas of the Mojave Desert
- 11 1st millennium BC establishments
- 112 Cretaceous Brazil
- 112 Maastrichtian life
- 112 Penwith
- 114 Groundcovers
- 114 Near threatened plants
- 114 Sulfate minerals
- 115 Fossils of Russia
- 115 Tributaries of Hudson Bay
- 116 Fauna of the Sonoran Desert
- 116 Island countries
- 116 Populated places in the Sierra Nevada (U S )
- 116 Populated places in the Sierra Nevada (U.S.)
- 117 Ecoregions of the United States
- 117 Fossils of England
- 117 San Joaquin Valley
- 11 7th millennium BC establishments
- 118 Fauna of the Plains Midwest (United States)
- 118 Mallees (habit)
- 119 American paleontologists
- 119 Gemstones
- 11 Achill Island
- 11 Aden
- 11 African Great Lakes
- 11 Albedo features on Mars
- 11 American glaciologists
- 11 American paleoanthropologists
- 11 American petroleum geologists
- 11 Americas related lists
- 11 Ancient Anatolia
- 11 Ancient Roman triumphal arches in Rome
- 11 Antarctic agencies
- 11 Archaeological sites in Colorado
- 11 Archaeological sites of prehistoric Anatolia
- 11 Archipelagoes of Norway
- 11 Archipelagoes of Seychelles
- 11 Artificial island airports
- 11 Atolls of Seychelles
- 11 Babi Yar
- 11 Bajocian life
- 11 Bajo de la Carpa Formation
- 11 Balkans
- 11 Bartonian Stage
- 11 Basalt
- 11 Bays of Antarctica
- 11 Bays of Lake Superior
- 11 Beaches of New Zealand
- 11 Beaches of Rio de Janeiro (city)
- 11 Beaches of Sydney
- 11 Beaches of Toronto
- 11 Beaches of Uruguay
- 11 Beaufort Group
- 11 Bharathappuzha
- 11 Biodegradable plastics
- 11 Biogeochemistry
- 11 Biogeographic realms
- 11 Bitterroot National Forest
- 11 Black Hills National Forest
- 11 Bodies of water of the Irish Sea
- 11 Braided rivers in Albania
- 11 Braided rivers in Europe
- 11 Brisbane River
- 11 Cable laying ships
- 11 Calderas of Iceland
- 11 Cambrian Greenland
- 11 Cambrian System of Europe
- 11 Canyons and gorges
- 11 Cape Breton Island
- 11 Carboniferous impact craters
- 11 Causeways
- 11 Caves of Canada
- 11 Caves of the Three Counties System
- 11 Chalk pits
- 11 Chao Phraya River
- 11 Chemical ecologists
- 11 Chemical ecology
- 11 Christianshavn
- 11 Chromium minerals
- 11 Cirques
- 11 Climate change feedbacks
- 11 Climate change mitigation
- 11 Climbing and mountaineering related lists
- 11 Coachella, California
- 11 Comics set in deserts
- 11 Community ecology
- 11 Cook Islands related lists
- 11 Cosmopolitan animals
- 11 Cres
- 11 Cretaceous Madagascar
- 11 Cretaceous paleontological sites of North America
- 11 Cretan State
- 11 Crofting
- 11 Dams in the Colorado River basin
- 11 Danube basin
- 11 Debussy quadrangle
- 11 Desert fauna
- 11 Desert greening
- 11 Deserts of California
- 11 Deserts of China
- 11 Deserts of Kazakhstan
- 11 Dike swarms
- 11 Distributaries of the Ganges
- 11 Documentary films about forests and trees
- 11 Earthquakes in Ecuador
- 11 Eastern Zimbabwe montane forest grassland mosaic
- 11 Ecoregions of Japan
- 11 Ecoregions of Zambia
- 11 Endorheic lakes of Australia
- 11 Engraved gem artists
- 11 Environmental impact of shipping
- 11 Environment of Antarctica
- 11 European geologic formation stubs
- 11 Felsic rocks
- 11 Fertilizers
- 11 Fishing areas of the Atlantic Ocean
- 11 Fish ponds
- 11 Fjords of Alaska
- 11 Fjords of Chile
- 11 Flat Earth
- 11 Floating islands
- 11 Floodplains of Africa
- 11 Fluvial geomorphology
- 11 Forests of Madagascar
- 11 Fossils of Algeria
- 11 Fossils of Ecuador
- 11 Fossil taxa described in 1835
- 11 Fossil taxa described in 1840
- 11 Fossil taxa described in 1841
- 11 Fossil taxa described in 1844
- 11 Fossil taxa described in 1845
- 11 Fossil taxa described in 1852
- 11 Fossil taxa described in 1893
- 11 Fossil taxa described in 1941
- 11 Fossil taxa described in 1948
- 11 Fossil taxa described in 1962
- 11 Fossil taxa described in 1968
- 11 Gambia River
- 11 Geest
- 11 Gehenna
- 11 Geography of Iceland
- 11 Geography of Sicily
- 11 Geologic domes
- 11 Geologic formations of Mexico
- 11 Geologic formations of New Zealand
- 11 Geologic formations of South Korea
- 11 Geophysical companies
- 11 German geophysicists
- 11 Glacial lakes of Argentina
- 11 Goldsmiths
- 11 Golfo San Jorge Basin
- 11 Gran Desierto de Altar
- 11 Gravel roads
- 11 Great Barrier Island
- 11 Great Sandy Desert
- 11 Green Mountain National Forest
- 11 Greenstone belts
- 11 G series nerve agents
- 11 Guam related lists
- 11 Gulfs of the Indian Ocean
- 11 Gulfs of Turkey
- 11 Headlands of France
- 11 Hebrew Bible valleys
- 11 Hedera
- 11 Helena National Forest
- 11 Herding
- 11 Highland (council area)
- 11 Hills of Italy
- 11 Hills of Uruguay
- 11 History of Aruba
- 11 History of Galicia (Eastern Europe)
- 11 History of Jamaica
- 11 History of Martinique
- 11 History of Nauru
- 11 History of Orkney
- 11 History of Sakhalin
- 11 History of the Azores
- 11 History of the English Channel
- 11 History of the Northern Mariana Islands
- 11 Hong River
- 11 Hotspot volcanism
- 11 Hot springs of India
- 11 Hot springs of Taiwan
- 11 Hydrothermal vents
- 11 Iberian Peninsula
- 11 Ice fields of British Columbia
- 11 Ice sheets
- 11 Igneous petrology of Quebec
- 11 Illinois Confederacy
- 11 Impact craters of Finland
- 11 Impact craters of the Northern Territory
- 11 Iona
- 11 Iron ore mining companies
- 11 Islands of Antarctica
- 11 Islands of Antigua and Barbuda
- 11 Islands of Poland
- 11 Islands of Portugal
- 11 Islands of Russia
- 11 Ivanpah Valley
- 11 Japanese archipelago
- 11 Jindo County
- 11 Jurassic paleontological sites
- 11 Jurassic paleontological sites of North America
- 11 Jurassic System of Australia
- 11 Kattegat
- 11 Kos
- 11 Kurnell Peninsula
- 11 Kwajalein Atoll
- 11 Lake Albert (Africa)
- 11 Lake Baikal
- 11 Lakes of Brazil
- 11 Lakes of Colombia
- 11 Lakes of Montenegro
- 11 Lake Winnipeg
- 11 Landfill
- 11 Landforms of Africa
- 11 Landforms of Akita Prefecture
- 11 Landforms of Alpes de Haute Provence
- 11 Landforms of Alpes Maritimes
- 11 Landforms of Bali
- 11 Landforms of Bohol
- 11 Landforms of Brittany
- 11 Landforms of Central Province, Sri Lanka
- 11 Landforms of Elis
- 11 Landforms of Gauteng
- 11 Landforms of Georgia (U S state)
- 11 Landforms of Georgia (U.S. state)
- 11 Landforms of Gironde
- 11 Landforms of Guangdong
- 11 Landforms of Kagoshima Prefecture
- 11 Landforms of Kentucky
- 11 Landforms of Kinmen County
- 11 Landforms of KwaZulu Natal
- 11 Landforms of Leyte (province)
- 11 Landforms of Lovech Province
- 11 Landforms of Northern Ostrobothnia
- 11 Landforms of Oaxaca
- 11 Landforms of Ohio
- 11 Landforms of Okinawa Prefecture
- 11 Landforms of Pennsylvania
- 11 Landforms of Phocis
- 11 Landforms of Pirkanmaa
- 11 Landforms of Rhineland Palatinate
- 11 Landforms of Rhodes (regional unit)
- 11 Landforms of Serres (regional unit)
- 11 Landforms of Taitung County
- 11 Landforms of the Gisborne District
- 11 Landforms of the Marlborough Region
- 11 Landforms of Vidin Province
- 11 Last Glacial Period
- 11 Lesser Antilles
- 11 Limestone sculptures
- 11 Lists of landforms
- 11 Lists of mountains of North America
- 11 Lists of mountains of Switzerland
- 11 Lists of rivers of Canada
- 11 Lists of waterfalls in the United States
- 11 Lithostratigraphy of England
- 11 LNG tankers
- 11 Loire Valley
- 11 Lombok
- 11 Lower Horizons Hydroelectric Power Stations System
- 11 Lualaba River
- 11 Mark Twain National Forest
- 11 Meteorites found in Russia
- 11 Mexican Plateau states
- 11 Mineral exploration
- 11 Mineralogists
- 11 Mining organizations
- 11 Mississippian United States
- 11 Mississippi embayment
- 11 Mojave Trails National Monument
- 11 Monogenetic volcanic fields
- 11 Mountain passes of Bulgaria
- 11 Mountain passes of Kyrgyzstan
- 11 Mountain ranges of Croatia
- 11 Mountain ranges of Indonesia
- 11 Mountain ranges of the Philippines
- 11 Mountain ranges of Uzbekistan
- 11 Mountain ranges of Yavapai County, Arizona
- 11 Mountain resorts in the Philippines
- 11 Mountains of Mozambique
- 11 Mountains of Namibia
- 11 Mountains of Tanzania
- 11 Mount St Helens
- 11 Mount St. Helens
- 11 Music based on Dune (franchise)
- 11 Natural regions of Belgium
- 11 Natural regions of Dorset
- 11 Nature conservation in Belize
- 11 Nature conservation in Bosnia and Herzegovina
- 11 Nature conservation in Portugal
- 11 New Zealand society
- 11 Oases
- 11 Oases of Saudi Arabia
- 11 Oases of Tunisia
- 11 Oceania related lists
- 11 Ohio Statehouse
- 11 Oil bearing shales in the United States
- 11 Oil fields of the United States
- 11 Olenekian Stage
- 11 Oligocene first appearances
- 11 Oligocene Series of South America
- 11 Omingonde Formation
- 11 Orange River
- 11 Ordovician impact craters
- 11 Paleontology in Antarctica
- 11 Paleontology in Ecuador
- 11 Paleontology in Morocco
- 11 Paleontology in North Dakota
- 11 Paleontology in the United States
- 11 Paleontology in Wisconsin
- 11 Paludal deposits
- 11 Pannonian island mountains
- 11 Parasitic cones
- 11 Passaic River
- 11 Payette National Forest
- 11 Peninsulas of Africa
- 11 Peninsulas of Antarctica
- 11 Peninsulas of China
- 11 Pennsylvanian Series
- 11 People from Hidalgo (state)
- 11 Permaculture concepts
- 11 Petroleum engineering schools
- 11 Phytogeographers
- 11 Phytogeography
- 11 Piracy in the Mediterranean
- 11 Piracy in the Pacific Ocean
- 11 Pit River
- 11 Plains of Australia
- 11 Plant conservation
- 11 Plants by habit
- 11 Pleistocene Europe
- 11 Pliocene Series of South America
- 11 Poaceae
- 11 Polar exploration
- 11 Pontus (region)
- 11 Populated places on the Leitha
- 11 Porphyritic rocks
- 11 Posidonia Shale
- 11 Precambrian animal stubs
- 11 Prehistoric plants of South America
- 11 Protected areas of Imperial County, California
- 11 Protected areas of the Eastern Carpathians
- 11 Protected areas of the U S Interior Highlands
- 11 Protected areas of the U.S. Interior Highlands
- 11 Proterozoic volcanism
- 11 Puget Sound
- 11 Pyroclastic shields
- 11 Quaternary fossil record
- 11 Radio stations in Durango
- 11 Rapids of the United States
- 11 Red River of the North
- 11 Ridges of Antarctica
- 11 Ringold Formation Miocene Fauna
- 11 Riochican
- 11 River deltas of Europe
- 11 Rivers of Gabon
- 11 Rivers of Metro Manila
- 11 Rock formations of Bulgaria
- 11 Rock formations of New Zealand
- 11 Rondout Creek
- 11 Russian ecologists
- 11 Sandstone bridges in Australia
- 11 Sava basin
- 11 Scottish mineralogists
- 11 Scottish palaeontologists
- 11 Sedna Planitia quadrangle
- 11 Shatt al Arab basin
- 11 Shell grottoes
- 11 Silurian System of North America
- 11 Silurian United States
- 11 Songhua River
- 11 Songs about Ireland
- 11 South America related lists
- 11 South America stubs
- 11 Southern Rift montane forest grassland mosaic
- 11 Spa towns in Greece
- 11 Stacks of the United States
- 11 Strathgryffe
- 11 Subglacial mounds of Canada
- 11 Surface features on Callisto (moon)
- 11 Swedish mineralogists
- 11 Systems ecologists
- 11 Tana River (Kenya)
- 11 Tasmania related lists
- 11 Tendaguru fauna
- 11 Terrae on Mars
- 11 The Mummy (franchise)
- 11 Thermophiles
- 11 Thorium minerals
- 11 Tibetan Plateau
- 11 Tidal islands
- 11 Tidal islands of Wales
- 11 Tributaries of Lake Champlain
- 11 Tributaries of Lake Constance
- 11 Tributaries of the Syr Darya
- 11 Tributaries of the Terek
- 11 Tuyas of Iceland
- 11 United States Virgin Islands related lists
- 11 Uranium minerals
- 11 Valleys of Israel
- 11 Volcanoes of China
- 11 Volcanoes of Colombia
- 11 Volcano observatories
- 11 Waikato River
- 11 Waterfalls of India
- 11 Waterfalls of Mexico
- 11 Waterfalls of Thailand
- 11 Water gaps
- 11 Water management in mining
- 11 Weihai
- 11 Western Highlands Province
- 11 Yadkin Pee Dee River Basin
- 11 Yamuna River
- 11 Yare catchment
- 120 Critically endangered plants
- 12 18th century volcanic events
- 121 Cotswolds
- 12 1st millennium BC
- 12 2000 earthquakes
- 12 2002 earthquakes
- 12 2005 earthquakes
- 12 2015 earthquakes
- 12 2nd millennium BC disestablishments
- 122 Organophosphates
- 123 Polygenetic shield volcanoes
- 12 3rd millennium BC in Egypt
- 123 Structural geology
- 124 Isle of Portland
- 12 4th millennium BC
- 125 International rivers of Africa
- 125 Spencer Gulf
- 126 Former lakes
- 126 Fossils of France
- 126 Mountains of the Apennines
- 126 Old growth forests
- 127 American surveyors
- 127 Mojave Desert
- 127 Phosphate minerals
- 127 Plant toxins
- 128 Butterfly food plants
- 128 Fossils of Germany
- 128 Magnesium minerals
- 129 Alberni Valley
- 12 Allegheny River
- 12 Amador Valley
- 12 Amami Islands
- 12 American volcanologists
- 12 Anatolian Greeks
- 12 Anjouan
- 12 Antigua and Barbuda related lists
- 12 Apollo 13
- 12 Aqueducts
- 12 Aquitanian (stage)
- 12 Archipelagoes of the United States
- 12 Astoria, Oregon
- 12 Athabasca oil sands
- 12 Atlantis
- 12 Bactericides
- 12 Base tunnels
- 12 Basin and Range Province
- 12 Bay of Kotor
- 12 Bays of Cape Verde
- 12 Bays of Chile
- 12 Beaches of Venezuela
- 12 Beethoven quadrangle
- 12 Belcher Islands
- 12 Bifurcation lakes
- 12 Bighorn National Forest
- 12 Biocides
- 12 Birds of the Pampas
- 12 Blackfoot tribe
- 12 Blizzards
- 12 Bodies of water of Algeria
- 12 Boise National Forest
- 12 Bonin Islands
- 12 Buffalo jumps
- 12 Cacti
- 12 Cambrian life
- 12 Cambrian southern paleotemperate deposits
- 12 Canyons and gorges of Japan
- 12 Canyons and gorges of Turkey
- 12 Carboniferous System of North America
- 12 Caria
- 12 Carson National Forest
- 12 Catacombs of Rome
- 12 Caves containing pictograms in France
- 12 Caves containing pictograms
- 12 Caves of Japan
- 12 Cephalonia
- 12 Chalkidiki
- 12 Channels of Hong Kong
- 12 Cheung Chau
- 12 Cheviot Hills
- 12 Classical Gardens of Suzhou
- 12 Clay minerals group
- 12 Copper ores
- 12 Coromandel Peninsula
- 12 Cosmopolitan species
- 12 Cretaceous South Africa
- 12 Crocodile River (Limpopo)
- 12 Culebra, Puerto Rico
- 12 Currents of the Pacific Ocean
- 12 Czech paleontologists
- 12 Deaths in earthquakes
- 12 Delarof Islands
- 12 Deoxidizers
- 12 De Redin towers
- 12 Deserts of Central Asia
- 12 Deserts of Pakistan
- 12 Devonian southern paleotropical deposits
- 12 Distributaries of Europe
- 12 Drainage basins of the East Siberian Sea
- 12 Dunes
- 12 Earthquakes in Afghanistan
- 12 Earthquakes in Russia
- 12 Ecological connectivity
- 12 Ecological corridors of Brazil
- 12 Ecoregions of Ethiopia
- 12 Ecoregions of Mozambique
- 12 Ecoregions of Panama
- 12 Ecoregions of the Philippines
- 12 Eel River (California)
- 12 El Hierro
- 12 Eocene United States
- 12 Estuaries of the Black Sea
- 12 Extant Middle Pleistocene first appearances
- 12 Extinction in fiction
- 12 Fjords of Qikiqtaaluk Region
- 12 Foreland basins
- 12 Former islands of the Netherlands
- 12 Fossils of New Zealand
- 12 Fossils of Paraguay
- 12 Fossil taxa described in 1891
- 12 Fossil taxa described in 1901
- 12 Fossil taxa described in 1952
- 12 Fossil taxa described in 1956
- 12 Fossil taxa described in 1957
- 12 Fossil taxa described in 1958
- 12 Fossil taxa described in 1965
- 12 Foundations (buildings and structures)
- 12 Fuerteventura
- 12 Gallatin National Forest
- 12 Gas shipping companies
- 12 Gemologists
- 12 Geochronology
- 12 Geography of Asia
- 12 Geography of Gotland County
- 12 Geologic formations of Denmark
- 12 Geologic formations of the Dominican Republic
- 12 Geologic formations of Zimbabwe
- 12 Geophysicists
- 12 Geotechnical engineers
- 12 Geothermal areas
- 12 Gezira Island
- 12 Gila National Forest
- 12 Glaciers of Magallanes Region
- 12 Glaciers of the Sierra Nevada (U S )
- 12 Glaciers of the Sierra Nevada (U.S.)
- 12 Government of Madagascar
- 12 Great Lakes Waterway
- 12 Great Palm Island group
- 12 Greenhorn Mountains
- 12 Gulf of Bothnia
- 12 Gulfs of the Atlantic Ocean
- 12 Hanko
- 12 Harlem River
- 12 Hiawatha National Forest
- 12 Highlands and Islands Airports
- 12 Hills of Athens
- 12 Historical tectonic plates
- 12 History of Coahuila
- 12 History of paleontology
- 12 History of Sonora
- 12 History of Tahiti
- 12 History of the Balearic Islands
- 12 History of the Comoros
- 12 History of the Pacific Ocean
- 12 History of the Red Sea
- 12 Hoy
- 12 Icebreakers
- 12 Ice caps of Antarctica
- 12 Impactor spacecraft
- 12 Individual sapphires
- 12 Inner Niger Delta
- 12 Inselbergs of Africa
- 12 Interior Plateau
- 12 Intermetallics
- 12 International canals
- 12 International lakes of Asia
- 12 Ionian Islands
- 12 Islands of Madagascar
- 12 Islands of North Korea
- 12 Islands of the Chukchi Sea
- 12 Islands of Vietnam
- 12 Jeffersonville Limestone
- 12 Jekyll Island
- 12 Jurassic Morocco
- 12 Jurassic volcanism
- 12 Jute
- 12 Kalimantan
- 12 Kamchatka Peninsula
- 12 Kensington Gardens
- 12 Kruger National Park
- 12 Lacustrine landforms
- 12 Ladinian Stage
- 12 Lagoons of Europe
- 12 Lake Balaton
- 12 Lakes of Armenia
- 12 Lakes of Kyrgyzstan
- 12 Landforms of Almaty Region
- 12 Landforms of Bursa Province
- 12 Landforms of Camarines Sur
- 12 Landforms of Central Sulawesi
- 12 Landforms of Harju County
- 12 Landforms of Lesser Poland Voivodeship
- 12 Landforms of Mazandaran Province
- 12 Landforms of Mpumalanga
- 12 Landforms of Nordland
- 12 Landforms of Pernambuco
- 12 Landforms of Phthiotis
- 12 Landforms of Rogaland
- 12 Landforms of Saare County
- 12 Landforms of Sonora
- 12 Landforms of Texas
- 12 Landforms of the Hawke's Bay Region
- 12 Landforms of Thessaly
- 12 Landforms of the West Coast, New Zealand
- 12 Landforms of the Western Cape
- 12 Landforms of Western Macedonia
- 12 Landforms of Wyoming
- 12 Land surveying systems
- 12 Lanzarote
- 12 La Palma
- 12 Lastovo
- 12 Late Jurassic South America
- 12 Late Woodland period
- 12 Lava flows
- 12 Leeward Islands (Caribbean)
- 12 Limestone sculptures in Indiana
- 12 Lists of beaches of the United States
- 12 Lists of landforms of Estonia
- 12 Lists of mountains and hills of the British Isles
- 12 Lists of mountains of Germany
- 12 Lists of rivers of Romania
- 12 Lomaiviti Province
- 12 Lost mines
- 12 Lunar samples
- 12 Lydia
- 12 Marin County, California
- 12 Marine reserves of the United States
- 12 Maritime affairs ministries
- 12 Marquesas Islands
- 12 Martian meteorites
- 12 Mauna Loa
- 12 Military history of the Pacific Ocean
- 12 Mining in Namibia
- 12 Mining in the United States
- 12 Mining railways
- 12 Mining techniques
- 12 Mokelumne River
- 12 Moray Firth catchment area
- 12 Mountain guides
- 12 Mountain peaks of the Blue Mountains (New South Wales)
- 12 Mountain ranges of Argentina
- 12 Mountain ranges of Bolivia
- 12 Mountain ranges of Bulgaria
- 12 Mountain ranges of Hungary
- 12 Mountain ranges of Pakistan
- 12 Mountain ranges of Venezuela
- 12 Mountains of Armenia
- 12 Mountains of Bangladesh
- 12 Mountains of Egypt
- 12 Mountains of the Ansel Adams Wilderness
- 12 Mountains of the Eastern Carpathians
- 12 Mountains of the Southern Carpathians
- 12 Mountains of Uganda
- 12 Mount Meager massif
- 12 Murmansk Oblast
- 12 National Register of Historic Places in Bryce Canyon National Park
- 12 Natural gas terminals
- 12 Natural history of Coahuila
- 12 Natural history of Jalisco
- 12 Natural pools
- 12 Nature conservation in Australia
- 12 Neogene Brazil
- 12 Neversink River
- 12 Nuclear powered icebreakers
- 12 Ocala National Forest
- 12 Oil fields of Brazil
- 12 Okanogan National Forest
- 12 Olympic National Forest
- 12 Omaha (Native American) people
- 12 Orogeny
- 12 Osage people
- 12 Owen Sound
- 12 Paleogeography
- 12 Paleontology in British Columbia
- 12 Paleontology in France
- 12 Paleontology in Hebei
- 12 Paleontology in Madagascar
- 12 Paleontology in Namibia
- 12 Paleontology in Oklahoma
- 12 Paleontology in Panama
- 12 Paleontology in the United Kingdom
- 12 Paleontology in Washington (state)
- 12 Paleozoic life of Prince Edward Island
- 12 Particulates
- 12 Peninsulas of Greece
- 12 Peninsulas of Iceland
- 12 Periglacial landforms
- 12 Permian animal stubs
- 12 Permian impact craters
- 12 Petroleum organizations
- 12 Philippine Sea
- 12 Phosphoramidates
- 12 Phosphorite formations
- 12 Pipeline stubs
- 12 Plains of Russia
- 12 Plateaus of Europe
- 12 Plateaus of Russia
- 12 Pleistocene Peru
- 12 Pleistocene Uruguay
- 12 Pleistocene Venezuela
- 12 Pliocene
- 12 Pontiac's War
- 12 Populated places on the Ticino (river)
- 12 Populated places on the Tigris River
- 12 Potash
- 12 Potrero Hill, San Francisco
- 12 Prehistoric life in popular culture
- 12 Prime Ministers of Madagascar
- 12 Pyroclastic cones
- 12 Reefs of Australia
- 12 Reefs of the Atlantic Ocean
- 12 Reefs of the Indian Ocean
- 12 Reefs of the Philippines
- 12 Rewilding
- 12 Richmond Park
- 12 Ridges
- 12 River Avon, Bristol
- 12 Rivers of Adelaide
- 12 Rivers of Burkina Faso
- 12 Rivers of Chad
- 12 Rivers of Cuba
- 12 Rivers of Glasgow
- 12 Rivers of Mali
- 12 Rivers of Panama
- 12 Rivers of the Western Ghats
- 12 River Tees
- 12 River Trent
- 12 Rock formations of Spain
- 12 Roman Empire cameos
- 12 Saharan countries
- 12 Saimaa
- 12 Salt flats
- 12 Sandstone in the United States
- 12 Sand to Snow National Monument
- 12 Sea of Japan
- 12 Seas of the Arctic Ocean
- 12 Seismic faults of Asia
- 12 Seismic faults of New Zealand
- 12 Senegal River
- 12 Septinsular Republic
- 12 Shenandoah River
- 12 Show caves in Italy
- 12 Sinkholes of Europe
- 12 Soil erosion
- 12 Songs about beaches
- 12 Spa towns in Slovakia
- 12 Stony iron meteorites
- 12 Structural basins of the United States
- 12 Subduction
- 12 Submarine communications cables in the Pacific Ocean
- 12 Sumter National Forest
- 12 Susquehanna River
- 12 Sustainability metrics and indices
- 12 Tailings dam failures
- 12 Tephra
- 12 Three thousanders
- 12 Tin mining
- 12 Triassic impact craters
- 12 Tributaries of Lake Maggiore
- 12 Umatilla National Forest
- 12 Upper Ordovician Series
- 12 Urban beaches
- 12 Val Bregaglia
- 12 Verulam Formation
- 12 Vetulicolia
- 12 Volcanic fields of Canada
- 12 Volcanoes of Ecuador
- 12 Volcanoes of Ethiopia
- 12 Volcanoes of Georgia (country)
- 12 Volcanoes of the Northern Mariana Islands
- 12 Wabash River
- 12 Waterfalls of Bosnia and Herzegovina
- 12 Waterfalls of Brazil
- 12 Welland Canal
- 12 Western (genre) anime and manga
- 12 Wetlands of Taiwan
- 12 Yuma Desert
- 130 Birds of Eurasia
- 130 Mountains, peaks and hills of Hong Kong
- 130 Trigonal minerals
- 13 1999 earthquakes
- 131 Meteorites by name
- 131 Mountains of the Pyrenees
- 131 Nottaway River drainage basin
- 131 Rivers of Chile
- 131 Washington (state) glacier stubs
- 132 Cubic minerals
- 132 Mountain passes of Switzerland
- 133 Films set in the Mediterranean Sea
- 133 Fossils of the United States
- 133 Riverine warfare
- 134 Dinosaur films
- 134 Fjords of Greenland
- 134 Glacier stubs
- 135 Archipelagoes of the Pacific Ocean
- 135 Ellsworth Land glacier stubs
- 136 Mountain ranges of the Mojave Desert
- 137 Antarctica glacier stubs
- 13 7th century BC
- 138 Earthquake stubs
- 139 Ecology
- 139 Sodium minerals
- 13 Afrotropical realm
- 13 Algal blooms
- 13 Amazon River
- 13 American seismologists
- 13 Anticosti Island
- 13 Anza Borrego Desert State Park
- 13 Apollo 14
- 13 Apollo 16
- 13 Arches National Park
- 13 Archipelagoes of Italy
- 13 Arsenide minerals
- 13 Atmospheric circulation
- 13 Aviation fuels
- 13 Bay of Greifswald
- 13 Bays of the Pacific Ocean
- 13 Beaches of Thailand
- 13 Bioko
- 13 Bison hunters
- 13 Bohai Sea
- 13 Botanists active in the Pacific
- 13 Braided rivers in Italy
- 13 Brawley, California
- 13 Brittany
- 13 Burrow fossils
- 13 Canning River (Western Australia)
- 13 Canyons and gorges of Germany
- 13 Caribbean in fiction
- 13 Caribou Targhee National Forest
- 13 Caroline Islands Archipelago
- 13 Casamayoran
- 13 Cave geology
- 13 Cave sites in Mesoamerican archaeology
- 13 Caves of Austria
- 13 Caves of Bosnia and Herzegovina
- 13 Caves of France
- 13 Chattahoochee River
- 13 Chek Lap Kok
- 13 Classical aqueducts in Rome
- 13 Climate change and agriculture
- 13 Coasts of Antarctica
- 13 Cockatoo Island (New South Wales)
- 13 Colliers
- 13 Conservation reliant species
- 13 Cretaceous plants
- 13 Cretaceous System of North America
- 13 Dams on the Colorado River
- 13 Denali
- 13 Devonian animal stubs
- 13 Dolphinariums
- 13 Drilling rig operators
- 13 Dune (franchise) images
- 13 East African montane forests
- 13 Eastern Carpathians
- 13 Ecoregions of Spain
- 13 Ecoregions of Sudan
- 13 Ecoregions of the Himalayas
- 13 Eleuthera
- 13 Endorheic basins of Asia
- 13 Environmental issues with forests
- 13 Estuaries of Canada
- 13 Fictional superorganisms
- 13 Fiction set in prehistory
- 13 Fjords of Denmark
- 13 Flinders Island
- 13 Floristic regions
- 13 Fossils of Iran
- 13 Fossils of Ireland
- 13 Fossils of Switzerland
- 13 Fossils of Zambia
- 13 Fossil taxa described in 1837
- 13 Fossil taxa described in 1838
- 13 Fossil taxa described in 1839
- 13 Fossil taxa described in 1846
- 13 Fossil taxa described in 1847
- 13 Fossil taxa described in 1849
- 13 Fossil taxa described in 1857
- 13 Fossil taxa described in 1858
- 13 Fossil taxa described in 1879
- 13 Fossil taxa described in 1883
- 13 Fossil taxa described in 1909
- 13 Fossil taxa described in 1927
- 13 Fossil taxa described in 1934
- 13 Fossil taxa described in 1939
- 13 Fossil taxa described in 1940
- 13 Fossil taxa described in 1954
- 13 Fossil taxa described in 1959
- 13 Fracture zones
- 13 French rock climbers
- 13 Frozen drinks
- 13 Geochronology stubs
- 13 Geodesists
- 13 Geography of South America
- 13 Geologic formations of Africa by country
- 13 Geologic formations of Madagascar
- 13 Geologic formations of Morocco
- 13 Geologic formations of Namibia
- 13 Geologic groups of Africa
- 13 Geology of the Indian Ocean
- 13 Geotopes
- 13 German ecologists
- 13 Granitic rocks
- 13 Great Barrier Reef Marine Park
- 13 Great Basin deserts
- 13 Greater Antilles
- 13 Grimsby, Ontario
- 13 Gulf of Sidra
- 13 Hackensack River
- 13 Hallingdal
- 13 Headlands of Italy
- 13 Headlands of Spain
- 13 Hides (skin)
- 13 Highest points of Italian regions
- 13 Highlands of Iceland
- 13 Hills of Pakistan
- 13 Hills of Singapore
- 13 History of Borneo
- 13 History of Guadeloupe
- 13 History of Mauritius
- 13 History of the Andaman and Nicobar Islands
- 13 History of the Black Sea
- 13 History of the Great Basin
- 13 History of the Isles of Scilly
- 13 History of Tuvalu
- 13 Holy wells in Scotland
- 13 Homo fossils
- 13 Hydrocarbon solvents
- 13 Icebreakers of Canada
- 13 Impact craters of Western Australia
- 13 International lakes of South America
- 13 Inyo Mountains
- 13 Islands of Belize
- 13 Islands of Stockholm
- 13 Islands of Sydney
- 13 Isle Royale
- 13 Iveragh Peninsula
- 13 Jubba River
- 13 Jurassic extinctions
- 13 Jurassic impact craters
- 13 Karnaphuli River
- 13 Karst caves of Bosnia and Herzegovina
- 13 Karst formations of China
- 13 Kerch Peninsula
- 13 Koogs
- 13 Labuan
- 13 Lake Powell
- 13 Lakes of Azerbaijan
- 13 Lakes of Costa Rica
- 13 Lakes of Georgia (country)
- 13 Lake Turkana
- 13 Lamma Island
- 13 Landforms of Apulia
- 13 Landforms of Cebu
- 13 Landforms of Corfu (regional unit)
- 13 Landforms of Flevoland
- 13 Landforms of Friuli Venezia Giulia
- 13 Landforms of Hautes Alpes
- 13 Landforms of Istanbul Province
- 13 Landforms of Ithaca
- 13 Landforms of Mexico City
- 13 Landforms of Minas Gerais
- 13 Landforms of North Maluku
- 13 Landforms of Nuevo León
- 13 Landforms of Penghu County
- 13 Landforms of Quezon
- 13 Landforms of Savoie
- 13 Landforms of Shizuoka Prefecture
- 13 Landforms of Tainan
- 13 Landforms of Tamil Nadu
- 13 Landforms of the Sporades
- 13 Landforms of the State of Mexico
- 13 Landforms of Utah
- 13 Landforms of Victoria (Australia)
- 13 Late Pleistocene
- 13 Lighthouses of the Great Lakes
- 13 Line Islands
- 13 Lismore, Scotland
- 13 Lists of caves by country
- 13 Lists of landforms of Greenland
- 13 Lists of river tributaries of the United States
- 13 Livermore Valley
- 13 Lower Cretaceous Series of Africa
- 13 Lutetian Stage
- 13 Maars of Australia
- 13 Magnetic anomalies
- 13 Malheur National Forest
- 13 Marble sculptures in Germany
- 13 Marine realms
- 13 Melville Bay
- 13 Mendocino National Forest
- 13 Mexicali
- 13 Michelangelo quadrangle
- 13 Mojave River
- 13 Moraines of the United States
- 13 Mountain geomorphology
- 13 Mountain meteorology
- 13 Mountain passes of the Carpathians
- 13 Mountain ranges of Georgia (country)
- 13 Mountain ranges of Portugal
- 13 Mountains of Algeria
- 13 Mountains of Nicaragua
- 13 Mount Kilimanjaro
- 13 Natural gas fields in Norway
- 13 North Jutland Region
- 13 Oceanic trenches of the Pacific Ocean
- 13 Odawa
- 13 Ordovician Argentina
- 13 Paleogene Colombia
- 13 Paleontology in Kansas
- 13 Paleontology in Nevada
- 13 Paleontology
- 13 Papakating Creek watershed
- 13 Pasig River
- 13 Peak oil books
- 13 Pencils
- 13 Peninsulas of Denmark
- 13 Peninsulas of Europe
- 13 Peninsulas of Turkey
- 13 Penobscot Bay
- 13 People from Madeira
- 13 Permian paleotemperate deposits
- 13 Permian System of Africa
- 13 Perovskites
- 13 Phosphorodithioates
- 13 Pleistocene North America
- 13 Populated places on the Irtysh River
- 13 Powerline river crossings
- 13 Puerto Rico related lists
- 13 Pyroxene group
- 13 Rafting
- 13 Rapids
- 13 Riversleigh fauna
- 13 Rivers of Bhutan
- 13 Rivers of Jakarta
- 13 Rivers of Laos
- 13 Royal Dutch Shell oil and gas fields
- 13 Saint Lucia related lists
- 13 San Diego River
- 13 San Rafael Mountains
- 13 Saronic Gulf
- 13 Seas of the Atlantic Ocean
- 13 Sedimentary basins of Australia
- 13 Segmented waterfalls
- 13 Selenide minerals
- 13 Shipwrecks in the Arctic Ocean
- 13 Show caves in Bulgaria
- 13 Show caves in France
- 13 Show caves in Slovakia
- 13 Show caves in Turkey
- 13 Silurian southern paleotemperate deposits
- 13 Spa towns in Ukraine
- 13 Springs of Germany
- 13 Storm tides of the North Sea
- 13 Strait of Gibraltar
- 13 Subfields of ecology
- 13 Superorganisms
- 13 Surveying organizations
- 13 Teign catchment
- 13 Temperate Northern Pacific
- 13 Temples in the Campus Martius
- 13 The Flintstones characters
- 13 Tributaries of Georgian Bay
- 13 Tributaries of the Kuban
- 13 Tsunami
- 13 Tungsten minerals
- 13 Tyne catchment
- 13 Ultramafic rocks
- 13 Uranium mining
- 13 Usedom
- 13 Vaal River
- 13 Volcanoes of Venus
- 13 Wadi Tumilat
- 13 Waterfalls of Pakistan
- 13 Water meadows
- 13 Wetlands of Estonia
- 13 Wetlands of North Korea
- 13 Whanganui River
- 13 White Mountains (California)
- 13 Windsor Great Park
- 13 Yellow River
- 13 Yorkshire Wolds
- 140 Mountains of Chile
- 140 San Gabriel Mountains
- 141 Fossils of China
- 141 Thioethers
- 14 2003 earthquakes
- 14 2006 earthquakes
- 143 Bunchgrasses of North America
- 143 Fossiliferous stratigraphic units of South America
- 144 Grasses of Asia
- 144 Lakes of Estonia
- 14 5th millennium BC
- 146 Vines
- 147 Plate tectonics
- 147 Rivers of Austria
- 148 Geomorphology
- 149 Oxide minerals
- 14 Abyssal plains
- 14 Aegean Sea
- 14 Aeolian Islands
- 14 Amber
- 14 American topographers
- 14 Ancient Near and Middle East clay objects
- 14 Ancient Roman tombs and cemeteries in Rome
- 14 Antibiotic resistance
- 14 Anticyclones
- 14 Appalachian balds
- 14 Archipelagoes of the Southern Ocean
- 14 Asteroidal achondrites
- 14 Atmosphere of Earth
- 14 Australia mountain stubs
- 14 Australian paleontologists
- 14 Bach quadrangle
- 14 Barstovian
- 14 Bays of Malta
- 14 Bays of the Atlantic Ocean
- 14 Beaches of Cuba
- 14 Bishop, California
- 14 Black Rock Desert
- 14 Blancan
- 14 Bridges over the Saint Lawrence River
- 14 Caves of Croatia
- 14 Caves of Serbia
- 14 Caves of Turkey
- 14 Chaotic terrains on Mars
- 14 Chatham Island
- 14 Cherokee National Forest
- 14 Chino Hills (California)
- 14 Chippewa
- 14 Climate change assessment and attribution
- 14 Coal in the United States
- 14 Coasts of Spain
- 14 Copper(I) minerals
- 14 Countries in the Caribbean
- 14 Cretaceous magmatism
- 14 Cretaceous Thailand
- 14 Crete
- 14 Croajingolong National Park
- 14 Crystallographic defects
- 14 Crystal structure types
- 14 D'Entrecasteaux Islands
- 14 Desert flora
- 14 Deserts of Mexico
- 14 Devonian System of Europe
- 14 Dinosaurs in comic books
- 14 Documentary films about petroleum
- 14 Earthquakes in Argentina
- 14 Earthquakes in Guatemala
- 14 Earthquakes in Taiwan
- 14 East Frisian Islands
- 14 Economic geologists
- 14 Ecoregions of Afghanistan
- 14 Ecoregions of Cameroon
- 14 Ecoregions of Malaysia
- 14 Ecoregions of New Zealand
- 14 Ecoregions of Nigeria
- 14 Eminescu quadrangle
- 14 Endangered ecological communities
- 14 Environment of Europe
- 14 Eocene plants
- 14 Estuaries of Ukraine
- 14 Euboea
- 14 Euphrates
- 14 Eurasian history
- 14 Famennian extinctions
- 14 Films about tsunamis
- 14 Fish of the Southern Ocean
- 14 Flood control projects
- 14 Floodplains of the United States
- 14 Fossils of Romania
- 14 Fossil taxa described in 1875
- 14 Fossil taxa described in 1890
- 14 Fossil taxa described in 1902
- 14 Fossil taxa described in 1905
- 14 Fossil taxa described in 1917
- 14 Fossil taxa described in 1960
- 14 Fossil taxa described in 1971
- 14 Fossil trackways in the United States
- 14 Gemology
- 14 Geographic areas of seismological interest
- 14 Geography of Africa
- 14 Geological ages
- 14 Geologic formations of Ecuador
- 14 Geologic formations of India
- 14 Geologic formations of Norway
- 14 Geophysics societies
- 14 Gilding
- 14 Glacial erosion landforms
- 14 Glaciers of Argentina
- 14 Glaciers of the Olympic Mountains
- 14 Gravimetry
- 14 Greater Sunda Islands
- 14 Gulf of Finland
- 14 Haida Gwaii
- 14 Heavy equipment
- 14 Highest points of Russian federal subjects
- 14 Highest points of Welsh counties
- 14 Hills
- 14 Hills of New Zealand
- 14 Hills of the United States
- 14 History of Anglesey
- 14 History of Guam
- 14 History of Palau
- 14 History of Sulawesi
- 14 History of the Isle of Wight
- 14 History of the North Sea
- 14 History of the Outer Hebrides
- 14 History of the Solomon Islands
- 14 History of Tierra del Fuego
- 14 Holy wells in Ireland
- 14 Horn of Africa
- 14 Hotspots of the Pacific Ocean
- 14 Hot springs of New Zealand
- 14 Hudson Highlands
- 14 Humber
- 14 Impact craters on Saturn's moons
- 14 Impact geology
- 14 Indigenous peoples of the Great Basin
- 14 Inselbergs of North America
- 14 Ionian Sea
- 14 Iron ores
- 14 Island Games
- 14 Islands in fiction
- 14 Islands of Saint Vincent and the Grenadines
- 14 Islands of the Andaman Sea
- 14 Islands of Trinidad and Tobago
- 14 Ituzaingó Formation
- 14 Kenosha, Wisconsin
- 14 Kerch Strait
- 14 La Gomera
- 14 Lagoons of New Zealand
- 14 Lagoons of Sri Lanka
- 14 Laguna Mountains
- 14 Lakes of Cameroon
- 14 Lakes of Tajikistan
- 14 Lakes of the Black Forest
- 14 Landforms of Baja California
- 14 Landforms of Boeotia
- 14 Landforms of Chiayi County
- 14 Landforms of Chihuahua (state)
- 14 Landforms of Crimea
- 14 Landforms of East Attica
- 14 Landforms of Islands (regional unit)
- 14 Landforms of Missouri
- 14 Landforms of Smolyan Province
- 14 Landforms of the Basque Country
- 14 Landforms of the Riau Islands
- 14 Landforms of the Sulu Sea
- 14 Landforms of the Valencian Community
- 14 Landforms of Troms og Finnmark
- 14 Landforms of Valais
- 14 Landforms of Var (department)
- 14 Landforms of West Pomeranian Voivodeship
- 14 Land van Heusden en Altena
- 14 Langhian
- 14 Lemuria (continent)
- 14 Leven catchment
- 14 Lists of dams and reservoirs by country
- 14 Macquarie Harbour
- 14 Medicinal clay
- 14 Mercury(II) minerals
- 14 Metals
- 14 Mining ministries
- 14 Mining museums
- 14 Mojave, California
- 14 Monogenetic volcanoes
- 14 Mont Blanc
- 14 Morvern
- 14 Mountain passes of Argentina
- 14 Mountain passes of Slovenia
- 14 Mountain ranges of Asia
- 14 Mountain ranges of Iran
- 14 Mountain ranges of Kazakhstan
- 14 Mountain ranges of Suriname
- 14 Mountain ranges of Yuma County, Arizona
- 14 Mountains of Cambodia
- 14 Mountains of Djibouti
- 14 Mountains of Hungary
- 14 Mountains of Iraq
- 14 Mountains of Kyrgyzstan
- 14 Mountains of North Macedonia
- 14 Mountains of Russia
- 14 Mountains of Sweden
- 14 Mountains of Ukraine
- 14 Mysia
- 14 Natural gas fields in Russia
- 14 Nature conservation in Malaysia
- 14 Nematicides
- 14 Neogene Bolivia
- 14 Neogene Venezuela
- 14 New islands
- 14 Oases of Algeria
- 14 Oligocene volcanism
- 14 Ontario populated places on the Saint Lawrence River
- 14 OPEC
- 14 Ordovician System of South America
- 14 Ordovician United States
- 14 Outer Banda Arc
- 14 Pacific Coast Ranges
- 14 Paleocene Series of South America
- 14 Paleogene Peru
- 14 Paleontology in Australia
- 14 Paleontology in New Jersey
- 14 Paleoproterozoic magmatism
- 14 Palm Desert, California
- 14 Pamba River
- 14 PBT substances
- 14 Pemberton Volcanic Belt
- 14 Pembrokeshire
- 14 People executed by stoning
- 14 People from Lolland
- 14 Petroleum in the United States
- 14 Physiographic divisions
- 14 Plains of the United States
- 14 Plateaus of Antarctica
- 14 Pleistocene Chile
- 14 Politics of the Americas
- 14 Precambrian South America
- 14 Puente Hills
- 14 Radio stations in Jalisco
- 14 Rainforests of Africa
- 14 River cruise companies
- 14 River deltas of Asia
- 14 River morphology
- 14 Rivers of Haiti
- 14 Rivers of Iraq
- 14 Rivers of Ivory Coast
- 14 Rivers of Montenegro
- 14 Rivers of Sheffield
- 14 Rivers of South Sudan
- 14 Rivers of Sudan
- 14 Rivers of the Boundary Ranges
- 14 Rock climbing
- 14 Roman cisterns
- 14 Saint Lawrence Seaway
- 14 Salish Sea
- 14 Sand art
- 14 Sandstone buildings in Canada
- 14 Santa Fe National Forest
- 14 Schuylkill River
- 14 Seas of the Southern Ocean
- 14 Sedimentary basins of Argentina
- 14 Seismic faults of the United States
- 14 Serravallian
- 14 Shawnee National Forest
- 14 Sihl
- 14 Sirius Passet fossils
- 14 Sledding
- 14 Southern Highlands Province
- 14 Spinel group
- 14 Spits of the United States
- 14 Steamboat transport on the Colorado River
- 14 Stocks (geology)
- 14 Stonemasonry tools
- 14 Strontium minerals
- 14 Submarine power cables
- 14 Sulfur
- 14 Table Mountain National Park
- 14 Taieri River
- 14 Tamar River
- 14 Thiocarbonyl compounds
- 14 Thousand Islands
- 14 Tin minerals
- 14 Torreón
- 14 Travel to the Earth's center
- 14 Tree tapping
- 14 Triassic System of North America
- 14 Triassic System of South America
- 14 Tuolumne River
- 14 Tuzly Lagoons
- 14 Ueno Park
- 14 United States Ram Fleet
- 14 Valleys of Australia
- 14 Valleys of Italy
- 14 Valleys of New Zealand
- 14 VEI 8 volcanoes
- 14 Verdugo Mountains
- 14 Vilayets of the Ottoman Empire in Anatolia
- 14 Vitaceae
- 14 Volcanic arc islands
- 14 Volcanoes of Vanuatu
- 14 Wadis
- 14 Washes of California
- 14 Waterfalls of Iran
- 14 Waterfalls of the Philippines
- 14 Waterfalls of the Republic of Ireland
- 14 Waterfalls of Ukraine
- 14 Wind gaps of Virginia
- 14 X ray crystallography
- 150 Silicate mineral stubs
- 15 19th century
- 15 2007 earthquakes
- 152 Earth Impact Database
- 15 2nd millennium BC
- 153 Aquatic ecology
- 154 Dinosaurs in video games
- 155 Long Island Sound
- 157 Cretaceous Argentina
- 157 Holocene volcanoes
- 157 Novels set on islands
- 157 Populated places on the Danube
- 158 Flora of the Great Lakes region (North America)
- 158 Jurassic Coast
- 158 Lakes of Switzerland
- 158 Norway lake stubs
- 158 Rivers of New Zealand
- 159 Birds of Malesia
- 159 Dune (franchise) character redirects to lists
- 159 Fossils of Brazil
- 159 Great Lakes freighters
- 15 Aalenian Stage
- 15 Agroforestry
- 15 Aleutian Islands
- 15 Amazon rainforest
- 15 Animals living on hydrothermal vents
- 15 Arafura Sea
- 15 Archean
- 15 Archipelagoes of Chile
- 15 Arcipelago Toscano National Park
- 15 Artificial lakes of India
- 15 Atolls of India
- 15 Australian ecologists
- 15 Austrian paleontologists
- 15 Azawad
- 15 Bay City, Michigan
- 15 Bays of Russia
- 15 Biogeochemical cycle
- 15 Bison hunting
- 15 Canyons and gorges of the United States
- 15 Caves of Russia
- 15 Climate engineering
- 15 Connecticut River
- 15 Continental fragments
- 15 Countries in South America
- 15 Coves of the United States
- 15 Crescenta Valley
- 15 Cretaceous System of Australia
- 15 Derain quadrangle
- 15 Desert National Wildlife Refuge Complex
- 15 Dithiocarbamates
- 15 Dixie National Forest
- 15 Ecoregions of Australia
- 15 Ecoregions of Bolivia
- 15 Ecoregions of Ecuador
- 15 Ecoregions of Guatemala
- 15 Ecoregions of Thailand
- 15 Ecoregions of the Andes
- 15 Ecoregions of Turkey
- 15 Education in Africa
- 15 Eocene impact craters
- 15 Eocene Series of South America
- 15 European drainage basins of the Mediterranean Sea
- 15 Euryarchaeota
- 15 Exuma
- 15 ExxonMobil oil and gas fields
- 15 Feather River
- 15 Fictional characters with metal abilities
- 15 Fictional continents
- 15 Firth of Forth
- 15 Flood control
- 15 Forest conservation
- 15 Fossils of Thailand
- 15 Fossils of Wales
- 15 Fossil taxa described in 1851
- 15 Fossil taxa described in 1925
- 15 Fraser Island
- 15 Gasparilla Island
- 15 Geological type localities of Scotland
- 15 Geologic formations of Antarctica
- 15 Geologic formations of France
- 15 Glaciers of Bolivia
- 15 Graham Island
- 15 Granite domes
- 15 Grasses
- 15 Gravettian
- 15 Gulf of Guinea
- 15 Gulf of Khambhat
- 15 Gulfs of Italy
- 15 Halligen
- 15 History of ice hockey
- 15 History of the Gulf of California
- 15 History of Timor
- 15 History of Trinidad and Tobago
- 15 Holocene North America
- 15 Holston River
- 15 Icebergs
- 15 Ice companies
- 15 Ice skating
- 15 Idaho Panhandle National Forest
- 15 Indian ecologists
- 15 Inselbergs of Piedmont (United States)
- 15 International mountains of Africa
- 15 Islands of Azerbaijan
- 15 Islands of Montenegro
- 15 Islands of Sri Lanka
- 15 Islands of the Barents Sea
- 15 Islands of the Black Sea
- 15 Islands of the Marshall Islands
- 15 Italian paleontologists
- 15 Izu Bonin volcanic arc
- 15 Jurassic Colombia
- 15 Kahurangi National Park
- 15 Karst formations of Germany
- 15 Karst plateaus of Slovenia
- 15 Kayaking
- 15 Kenai Peninsula Borough, Alaska
- 15 Lake Geneva
- 15 Lake Mead
- 15 Lake Ontario
- 15 Lakes of Kenya
- 15 Landforms of Catalonia
- 15 Landforms of Hormozgan Province
- 15 Landforms of Illinois
- 15 Landforms of Messenia
- 15 Landforms of Pazardzhik Province
- 15 Landforms of Southland, New Zealand
- 15 Landforms of South Sulawesi
- 15 Landforms of Tehran Province
- 15 Landforms of the Atlantic Ocean
- 15 Landforms of Thira (regional unit)
- 15 Landforms of Vestland
- 15 Landforms of Washington (state)
- 15 Landforms of West Sumatra
- 15 Landforms of Yilan County, Taiwan
- 15 Lighthouses in Wisconsin
- 15 Limestone sculptures in the United States
- 15 Liquid crystal displays
- 15 Lists of countries by continent
- 15 Lists of dams in the United States
- 15 Lists of mountains by range
- 15 Managed retreat
- 15 Manila Bay
- 15 Mathematical ecologists
- 15 Mekong River
- 15 Mersey catchment
- 15 Military history of the Atlantic Ocean
- 15 Mining in Germany
- 15 Mining in the United Kingdom
- 15 Mississippian Series
- 15 Mountain passes of Chile
- 15 Mountain ranges of Myanmar
- 15 Mountain ranges of Nepal
- 15 Mountain ranges of the Southern Carpathians
- 15 Mountains of Azerbaijan
- 15 Mountains of Tajikistan
- 15 Mountains of Ulsan
- 15 Mountains of Vietnam
- 15 Mount Aspiring National Park
- 15 Mount Kenya
- 15 Mount Rushmore
- 15 Natural gas
- 15 Natural regions of France
- 15 Nature conservation in Canada
- 15 New Mexico Bootheel
- 15 North America related lists
- 15 North German Plain
- 15 Norway island stubs
- 15 Oil fields of Iran
- 15 Oil fields of Russia
- 15 Oxford Clay
- 15 Paleontology in England
- 15 Paleontology in Mongolia
- 15 Paleontology in New South Wales
- 15 Paleontology journals
- 15 Paleotropical flora
- 15 Peak oil films
- 15 People from Sinaloa
- 15 Petrified forests
- 15 Piracy in the Atlantic Ocean
- 15 Pisco Formation
- 15 Plant life form
- 15 Politics of Madagascar
- 15 Populated places in Pisidia
- 15 Precambrian Australia
- 15 Pterosaurs in fiction
- 15 Quercy Phosphorites Formation
- 15 Raja Ampat Islands
- 15 Ramsar sites in South Africa
- 15 Regions of Augustan Rome
- 15 Rhine basin
- 15 River Lea
- 15 River Mersey
- 15 Rivers of Belize
- 15 Rivers of Cape Verde
- 15 Rivers of Honduras
- 15 Rivers of Paraguay
- 15 Rivers of Ponce, Puerto Rico
- 15 Rivers of Suriname
- 15 Rivers of Syria
- 15 Rivers of the Republic of the Congo
- 15 Routt National Forest
- 15 Salton Trough
- 15 Santa Ynez Valley
- 15 Scoresby Sound
- 15 Scottish surveyors
- 15 Shipwrecks in the Sea of Japan
- 15 Sills (geology)
- 15 Silurian plants
- 15 Sioux people
- 15 Solling
- 15 Solomon Islands (archipelago)
- 15 Spa towns in Russia
- 15 St Clair River
- 15 St. Clair River
- 15 Subfields of paleontology
- 15 Surface features of Mercury
- 15 Television series set in prehistory
- 15 Telluride minerals
- 15 The Scorpion King (film series)
- 15 Tidal islands of England
- 15 Trees of the Great Basin
- 15 Triassic System of Africa
- 15 Tributaries of James Bay
- 15 Tributaries of the Green River (Colorado River tributary)
- 15 Tropical Andes
- 15 Tsunami earthquakes
- 15 Tunnel construction
- 15 Unconformities
- 15 Undersea banks of the Atlantic Ocean
- 15 Vanadate minerals
- 15 Volcanism of Iceland
- 15 Volcanoes of Cameroon
- 15 Volcanoes of Hawaii
- 15 Waterfalls of Sri Lanka
- 15 Waterfalls of Turkey
- 15 Water gaps of Pennsylvania
- 15 Weathering
- 15 Wildlife law
- 15 Yarra River
- 15 Yellow Sea
- 160 Films set in deserts
- 160 Populated places in the Mojave Desert
- 161 Colorado Plateau
- 16 2nd millennium BC in Egypt
- 163 Ichnofossiliferous formations
- 163 Mountains of Serbia
- 164 Dartmoor
- 165 Marine geography stubs
- 166 Volcanology stubs
- 168 Lacustrine deposits
- 168 Shipwrecks in the Pacific Ocean
- 168 United States glacier stubs
- 168 Western Isles geography stubs
- 169 International rivers of Asia
- 169 Least concern plants
- 169 Rivers of South Africa
- 169 Sandstone formations of the United States
- 16 Akkadian Empire
- 16 Amelia Island
- 16 Ascension Island
- 16 Asia mountain stubs
- 16 Astrolabe Island
- 16 Austrian mineralogists
- 16 Back arc basins
- 16 Backstairs Passage
- 16 Beaches of Chile
- 16 Beaches of Indonesia
- 16 Beaches of Jamaica
- 16 Bering Strait
- 16 Biota by conservation status
- 16 Carquinez Strait
- 16 Caves of Bulgaria
- 16 Central Highlands (Victoria)
- 16 Chalk
- 16 Chesapeake and Ohio Canal
- 16 Chinle fauna
- 16 Cirques of the United States
- 16 Climate change by country
- 16 Climate change in fiction
- 16 Clutha River
- 16 Coastal resorts in Michigan
- 16 Cobalt minerals
- 16 Comics set in prehistory
- 16 Community buyouts in Scotland
- 16 Coniacian life
- 16 Crato Formation
- 16 Cretaceous animal stubs
- 16 Cuyama Valley
- 16 Dams on the Snake River
- 16 Dee catchment
- 16 Dinosaur books
- 16 Djerba
- 16 Earthquakes in Chile
- 16 Earthquakes in Peru
- 16 Echeveria
- 16 Ecological processes
- 16 Economics and climate change
- 16 Ecoregions of Angola
- 16 Ecoregions of Pakistan
- 16 Ecoregions of Vietnam
- 16 English ecologists
- 16 Environmental impact of mining
- 16 Europe stubs
- 16 Exclusive economic zones
- 16 Eyalets of the Ottoman Empire in Anatolia
- 16 Eysturoy
- 16 Fife
- 16 Flint buildings
- 16 Forests of South Africa
- 16 Fossils of Denmark
- 16 Fossil taxa described in 1884
- 16 Fossil taxa described in 1885
- 16 Fossil taxa described in 1888
- 16 Fossil taxa described in 1983
- 16 Funafuti
- 16 Garibaldi Volcanic Belt
- 16 Geodesy organizations
- 16 Geodynamics
- 16 Geography of Europe
- 16 Geography of Svalbard
- 16 Geologic formations of Italy
- 16 Geologic formations of Trinidad and Tobago
- 16 Geologic groups of North America
- 16 Georgia (U S state) Sea Islands
- 16 Georgia (U.S. state) Sea Islands
- 16 Gravity hills
- 16 Hatteras Island
- 16 Hills of China
- 16 History of Svalbard
- 16 History of the British Virgin Islands
- 16 Holland, Michigan
- 16 Hong Kong UNESCO Global Geopark
- 16 Ice streams of Antarctica
- 16 Igneous intrusions
- 16 Indigenous peoples of the Great Plains
- 16 Individual hardstone carvings
- 16 Inselbergs of South America
- 16 Ischia
- 16 Islands by type
- 16 Islands of Africa
- 16 Islands of Kiribati
- 16 Islands of London
- 16 Islands of Spain
- 16 Islands of the Indian Ocean
- 16 Islands of the Persian Gulf
- 16 Iturup
- 16 Kalahari Desert
- 16 Kames
- 16 Kaveri River
- 16 King Edward VII Land
- 16 Krakatoa
- 16 Lake Champlain
- 16 Lake District
- 16 Lakes of Albania
- 16 Lakes of Argentina
- 16 Lakes of Guatemala
- 16 Lakes of the Democratic Republic of the Congo
- 16 Lakes of the U S Interior Highlands
- 16 Lakes of the U.S. Interior Highlands
- 16 Landforms of Baja California Sur
- 16 Landforms of Cagayan
- 16 Landforms of Campania
- 16 Landforms of Chiba Prefecture
- 16 Landforms of East Azerbaijan Province
- 16 Landforms of Jan Mayen
- 16 Landforms of New Mexico
- 16 Landforms of New York (state)
- 16 Landforms of Plovdiv Province
- 16 Landforms of Rio Grande do Sul
- 16 Landforms of Sabah
- 16 Landforms of Tennessee
- 16 Landforms of the Ionian Islands (region)
- 16 Landforms of Veracruz
- 16 Lesser Poland Voivodeship
- 16 Limestone statues
- 16 Lists of landforms of the United States
- 16 Lofoten
- 16 Lune catchment
- 16 Lycia
- 16 Marble sculptures in France
- 16 Marble sculptures in Greece
- 16 Mare Serenitatis
- 16 Megalithic Temples of Malta
- 16 Middle Triassic first appearances
- 16 Mining engineers
- 16 Mogollon culture
- 16 Mountain ranges of Maricopa County, Arizona
- 16 Mountains and hills of the Franconian Jura
- 16 Mountains of Afghanistan
- 16 Mountains of El Salvador
- 16 Mountains of the Fichtelgebirge
- 16 Natural gas plants
- 16 Negev
- 16 New Guinea
- 16 Northern Neck
- 16 Oligocene extinctions
- 16 Onondaga Lake
- 16 Ordovician southern paleotropical deposits
- 16 Ozone depletion
- 16 Palatine Hill
- 16 Paleogene United States
- 16 Paleontological sites of Florida
- 16 Paleontology in Florida
- 16 Paleontology in India
- 16 Paleontology in Inner Mongolia
- 16 Plant ecologists
- 16 Pleistocene events
- 16 Plumas National Forest
- 16 Priabonian Stage
- 16 Proposed canals
- 16 Radio stations in Sinaloa
- 16 Ribblesdale
- 16 River Dart
- 16 Rivers of Armenia
- 16 Rivers of Cambodia
- 16 Rivers of Guyana
- 16 Rivers of Saint Petersburg
- 16 Rivers of Tajikistan
- 16 Rivers of the Central African Republic
- 16 Rock formations of Antarctica
- 16 Rock formations of the Czech Republic
- 16 Saco River
- 16 Sacred rivers
- 16 Saginaw River
- 16 Sandstone churches in the United States
- 16 San Pedro Valley (Arizona)
- 16 Sanssouci Park
- 16 Sark
- 16 Sedimentary basins of Africa
- 16 Sedimentary basins of Europe
- 16 Silurian volcanism
- 16 Skerries
- 16 Smog
- 16 Solar power in the Mojave Desert
- 16 Solo River
- 16 Spring houses
- 16 Stanislaus River
- 16 States in medieval Anatolia
- 16 Superstition Mountains
- 16 Surface features of Pluto
- 16 Synoptic meteorology and weather
- 16 Tantalum minerals
- 16 Taxa named by Thomas Henry Huxley
- 16 The Flintstones
- 16 Timor Sea
- 16 Tinguirirican
- 16 Tortonian
- 16 Triassic England
- 16 Tributaries of Laguna de Bay
- 16 Tributaries of the Caspian Sea
- 16 Triple junctions
- 16 Tropics
- 16 Umpqua National Forest
- 16 Urea cycle
- 16 Video game characters with ice or cold abilities
- 16 Volcanoes of Argentina
- 16 Volcanoes of Kenya
- 16 Volcanoes of the Great Rift Valley
- 16 Water gaps of the United States
- 16 Waterton Lakes National Park
- 16 West Country
- 16 White Mountain National Forest
- 16 Wildlife smuggling
- 16 Zambezian region
- 170 Holocene extinctions
- 170 Natural history of the Colorado Desert
- 170 Spa towns in Germany
- 170 Tributaries of the Danube
- 171 Yorke Peninsula
- 17 2020 earthquakes
- 173 Tropical and subtropical moist broadleaf forests
- 174 Tree stubs
- 176 Flora of Malesia
- 176 Trees of Mediterranean climate
- 177 Sulfonamides
- 178 Forest of Dean
- 178 New Zealand articles missing geocoordinate data
- 179 Aluminium minerals
- 17 Aeolian landforms
- 17 Afromontane forests
- 17 Alsea River
- 17 Amager
- 17 Anisian Stage
- 17 Apollo 15
- 17 Archer class patrol vessels
- 17 Archipelagoes of Greece
- 17 Artificial hills
- 17 Artificial reefs
- 17 Asian culture
- 17 Beara peninsula
- 17 Bear River (Great Salt Lake)
- 17 Blowholes
- 17 Callovian life
- 17 Cambrian southern paleotropical deposits
- 17 Cantabrian Mountains
- 17 Carpathians
- 17 Caves of Jamaica
- 17 Chinese Buddhist grottoes
- 17 Conservation in England
- 17 Constructed wetlands
- 17 Continents
- 17 Countries in Oceania
- 17 Cretaceous Morocco
- 17 Cretaceous Venezuela
- 17 Daniel Boone National Forest
- 17 Deaths from lightning strikes
- 17 Decade Volcanoes
- 17 Deserts
- 17 Dinaric karst formations
- 17 Drainage basins of the Chukchi Sea
- 17 Drainage basins of the Gulf of Mexico
- 17 Dune (franchise) characters
- 17 Dust Bowl
- 17 Earthworks (engineering)
- 17 East Falkland
- 17 Economy of New Zealand
- 17 Ecoregions of Kazakhstan
- 17 Ecoregions of New Guinea
- 17 Ecoregions of Tanzania
- 17 Ediacaran first appearances
- 17 Elephant conservation
- 17 English Channel
- 17 Ephemeral islands
- 17 Ergs of Africa
- 17 Evaporite deposits
- 17 Fauna of the Southern Ocean
- 17 Fictional bees
- 17 Fictional hillbillies
- 17 Fictional mountains
- 17 Flood basalts
- 17 Fog
- 17 Fossil taxa described in 1828
- 17 Fossil taxa described in 1881
- 17 Fossil taxa described in 1912
- 17 Fossil taxa described in 1920
- 17 Fossil taxa described in 1931
- 17 Fossil taxa described in 1938
- 17 Fossil taxa described in 1967
- 17 Frisian Islands
- 17 Genesee River
- 17 Geologic formations of Alberta
- 17 Glaciers of Iceland
- 17 Glaciology of the United States
- 17 Guadalquivir
- 17 Heliamphora
- 17 Hills of Denmark
- 17 Historic surveying landmarks in the United States
- 17 History of Asia
- 17 History of Shetland
- 17 History of the petroleum industry
- 17 Holocene impact craters
- 17 Ice based desserts
- 17 Ice in transportation
- 17 Impact event minerals
- 17 Iron Age
- 17 Islands of the Sea of Marmara
- 17 Jewellery of India
- 17 Jiufotang fauna
- 17 Jura, Scotland
- 17 Klamath National Forest
- 17 Kluane National Park and Reserve
- 17 Kudurru boundary stones
- 17 Laccoliths
- 17 Lakes of Latvia
- 17 Lakes of Mexico
- 17 Lakes of Vietnam
- 17 Landforms of Balochistan (Pakistan)
- 17 Landforms of Galicia (Spain)
- 17 Landforms of Kalymnos (regional unit)
- 17 Landforms of Kanagawa Prefecture
- 17 Landforms of Lower Saxony
- 17 Landforms of Magallanes Region
- 17 Landforms of Odessa Oblast
- 17 Landforms of Puebla
- 17 Landforms of Quintana Roo
- 17 Landforms of Stockholm County
- 17 Landforms of the Bay of Plenty Region
- 17 Lava dammed lakes
- 17 Light pollution
- 17 Lists of landforms of Canada
- 17 Lists of mountains of Canada
- 17 Little Tennessee River
- 17 Los Angeles Aqueduct
- 17 Mediterranean
- 17 Megafloods
- 17 Miami tribe
- 17 Middle Triassic extinctions
- 17 Military history of the Black Sea
- 17 Minnesota River
- 17 Mojave Air and Space Port
- 17 Monte Rosa
- 17 Moreton Bay
- 17 Moselle
- 17 Mountain ranges of Pima County, Arizona
- 17 Narmada River
- 17 Nature conservation in South Africa
- 17 Neolithic Europe
- 17 Norfolk Island stubs
- 17 Ocean currents
- 17 Paja Formation
- 17 Paleogene England
- 17 Paleogene Oceania
- 17 Paleontology in Henan
- 17 Paleontology in Italy
- 17 Paleontology in New York (state)
- 17 Paleontology in Pennsylvania
- 17 Paleozoologists
- 17 Paracel Islands
- 17 Permian Brazil
- 17 Permian stubs
- 17 Petra
- 17 Petroleum industry
- 17 Pleistocene paleontological sites of Africa
- 17 Polders
- 17 Ponds of Europe
- 17 Populated places in Phrygia
- 17 Populated places of the Mogollon Rim
- 17 Proterozoic North America
- 17 Rivers of Benin
- 17 Rivers of China
- 17 Rivers of Melbourne
- 17 Rivers of Namibia
- 17 Rivers of Tokyo
- 17 Rivers of Uzbekistan
- 17 Rivers of Zambia
- 17 Ruderal species
- 17 Sandbanks of the North Sea
- 17 Sandstone houses in the United States
- 17 Sea Life Centres
- 17 Seismological observatories, organisations and projects
- 17 Seismology measurement
- 17 Shipwrecks in lakes
- 17 Show caves in Spain
- 17 Soil chemistry
- 17 Space filling polyhedra
- 17 Spa towns in Switzerland
- 17 St Johns River
- 17 St. Johns River
- 17 Supershear earthquakes
- 17 Surface features of Io (moon)
- 17 Surface mining
- 17 Swansea Valley
- 17 Sydney Harbour National Park
- 17 Tamar catchment
- 17 Tectonicists
- 17 Thames Estuary
- 17 Thiocyanates
- 17 Tremp Formation
- 17 Underwater ridges of the Pacific Ocean
- 17 Valanginian life
- 17 Valleys
- 17 Valleys of Europe
- 17 Valleys of France
- 17 Vertical datums
- 17 Victoria quadrangle
- 17 Volcanic belts
- 17 Volcanoes of Greece
- 17 Wadden Sea
- 17 White Sands Missile Range
- 17 Wilderness
- 17 Yttrium minerals
- 17 Zhanjiang
- 17 Zumbro River
- 180 LQ12 quadrangle
- 18 2013 earthquakes
- 183 Highest points of countries
- 183 Mountains and hills of the Northwest Highlands
- 184 Mining stubs
- 187 Conglomerate formations
- 189 Antibiotics
- 18 Adamantina Formation
- 18 African culture
- 18 Ajax, Ontario
- 18 Alcatraz Island in fiction
- 18 Alexander Archipelago
- 18 Amphibole group
- 18 Ap Lei Chau
- 18 Archipelagoes of the Indian Ocean
- 18 Artificial islands
- 18 Basque Mountains
- 18 Bays of Indonesia
- 18 Beaches of Turkey
- 18 Berriasian life
- 18 Biodegradable materials
- 18 Bird migration
- 18 Black Sea
- 18 Bruny Island
- 18 Calexico, California
- 18 Calton Hill
- 18 Cambrian extinctions
- 18 Campanian volcanic arc
- 18 Canals
- 18 Carboniferous System of Europe
- 18 Cardigan Bay
- 18 Caves of Greece
- 18 Caves of Israel
- 18 Caves of New Zealand
- 18 Cenozoic paleontological sites of North America
- 18 Coastline of New Zealand
- 18 Cobbled streets
- 18 Colombian emeralds
- 18 Congo River
- 18 Conservationists
- 18 Cretaceous Peru
- 18 Cretaceous Russia
- 18 Dakota people
- 18 Derwent (Cumbria) catchment
- 18 Dinosaur sculptures
- 18 Drainage basins of the Black Sea
- 18 Earthquakes in China
- 18 Earthquakes in Myanmar
- 18 Earthquakes in Pakistan
- 18 Ecoregions of Chile
- 18 Ecoregions of South Africa
- 18 Egg fossils
- 18 Elbe basin
- 18 Eocene volcanoes
- 18 Extinct ethnic groups
- 18 Fictional undersea characters
- 18 Figure skating
- 18 Flora of the Colorado Plateau and Canyonlands region
- 18 Fossils of Japan
- 18 Fossil taxa described in 1908
- 18 Fossil taxa described in 1921
- 18 Fossil taxa described in 1922
- 18 Fossil taxa described in 1926
- 18 Fossil taxa described in 1929
- 18 Fossil taxa described in 1942
- 18 Fossil taxa described in 1974
- 18 Fossil taxa described in 1976
- 18 Fossil taxa described in 1984
- 18 Fossil taxa described in 1989
- 18 Fraser River
- 18 Gabilan Range
- 18 Geography of Madagascar
- 18 Geography of Sardinia
- 18 Geography of the Colorado Desert
- 18 Geologic formations of Austria
- 18 Geologic formations of Cuba
- 18 Geologic formations of Mongolia
- 18 Geologic formation stubs
- 18 Gold rushes
- 18 Grand Cayman
- 18 Gulfs of Russia
- 18 Halmahera
- 18 Health in Africa
- 18 Hebrew Bible rivers
- 18 Hettangian life
- 18 Highest points of Japanese national parks
- 18 History of Cuba
- 18 History of Tonga
- 18 Hollow Earth in fiction
- 18 Horsetail waterfalls
- 18 Icebreakers of Finland
- 18 Impact event video games
- 18 Individual rocks
- 18 Islands of the Laptev Sea
- 18 Isothiocyanates
- 18 Joshua Tree National Park
- 18 Jurassic Chile
- 18 Jurassic System of North America
- 18 Klondike Gold Rush in fiction
- 18 Lagos Island
- 18 Lake groups
- 18 Lake Malawi
- 18 Lakes of Romania
- 18 Lakes of Tanzania
- 18 Lake St Clair
- 18 Lake St. Clair
- 18 Landforms of Norrbotten County
- 18 Landforms of Sardinia
- 18 Landforms of the canton of Bern
- 18 Landforms of Western Greece
- 18 La Plata basin
- 18 Lighthouses in Michigan
- 18 Limestone Alps
- 18 Lists of birds by location
- 18 Lists of birds
- 18 Lists of glaciers
- 18 Lusatian Highlands
- 18 Marble buildings
- 18 Marlborough Sounds
- 18 Meteorite groups
- 18 Miocene United States
- 18 Mountain ranges of Chile
- 18 Mountain ranges of Slovenia
- 18 Mountains and hills of the Cairngorms
- 18 Mountains and hills of the Pennines
- 18 Mountains of the Vosges
- 18 Myrmecophytes
- 18 Natural gas field stubs
- 18 Natural gas infrastructure in the United Kingdom
- 18 Natural monoliths
- 18 Neogene Panama
- 18 Nunataks of Greenland
- 18 Oceanaria in the United States
- 18 Ocean planets in fiction
- 18 Oldest human remains in the Americas
- 18 Ordovician System of Europe
- 18 Organochloride insecticides
- 18 Oswego, New York
- 18 Owyhee River
- 18 Palaeogeography stubs
- 18 Paleogene Brazil
- 18 Paleontology in Canada
- 18 Paleontology in Ohio
- 18 Paleontology in Russia
- 18 Paleozoic southern paleotemperate deposits
- 18 Pamir Mountains
- 18 Parramatta River
- 18 Pearl River Delta
- 18 Peninsulas of Asia
- 18 Plant extinctions since 1500
- 18 Pleistocene impact craters
- 18 Prince Edward Island related lists
- 18 Quartz gemstones
- 18 Rift volcanoes
- 18 Rivers of Luxembourg
- 18 Rivers of Mexico
- 18 Saint Lawrence River
- 18 Santa Ana River
- 18 Sarasvati River
- 18 Seamount chains
- 18 Searles Valley
- 18 Serbian Carpathians
- 18 Show caves in Australia
- 18 Show caves in Germany
- 18 Silicate minerals
- 18 Slovenian Riviera
- 18 South Volcanic Zone
- 18 Spa towns in Croatia
- 18 Spa towns in Serbia
- 18 Stratigraphy of the United Kingdom
- 18 Sulfur oxoacids
- 18 Taupo Volcanic Zone
- 18 Tennessee River
- 18 Tiburon, California
- 18 Tolstoj quadrangle
- 18 Tributaries of the Godavari River
- 18 Uninhabited islands
- 18 Uruguay River
- 18 Volcanic arcs
- 18 Volcanic cones
- 18 Volcanic craters
- 18 Volcanoes of Germany
- 18 Volcanoes of South Georgia and the South Sandwich Islands
- 18 Volcanoes of the Canary Islands
- 18 Western Carpathians
- 191 Epiphytes
- 191 Limestone buildings in Malta
- 192 Shetland geography stubs
- 194 Rivers of Japan
- 195 Mineral stubs
- 199 Mountains of Ellsworth Land
- 19 Agrostologists
- 19 Animal reintroduction
- 19 Anti herpes virus drugs
- 19 Baldwin Hills (mountain range)
- 19 Barrier islands
- 19 Beqaa Valley
- 19 Bertie Formation
- 19 Big Bear Valley
- 19 Biodiversity databases
- 19 Bioindicators
- 19 Birds of the Great Basin
- 19 Bismuth minerals
- 19 Brazos River
- 19 British ecologists
- 19 Camargue
- 19 Cambrian stubs
- 19 Cape Cod and the Islands
- 19 Carbon dioxide
- 19 Carboniferous extinctions
- 19 Cave churches
- 19 Cenderawasih Bay
- 19 Charles River
- 19 Chiricahua Mountains
- 19 Cities in the Mojave Desert
- 19 Cliffs
- 19 Climate change organizations
- 19 Cook Strait
- 19 Corfu
- 19 Coverdale (dale)
- 19 Cretaceous Niger
- 19 Croton Watershed
- 19 Curling stubs
- 19 Deserts and xeric shrublands in the United States
- 19 Devonian plants
- 19 Diamond
- 19 Documentary films about mining
- 19 Drakensberg
- 19 Echinades
- 19 Eden catchment
- 19 Elba
- 19 Elizabeth Islands
- 19 Elk Valley (British Columbia)
- 19 Endorheic basins of the United States
- 19 Equinor oil and gas fields
- 19 Erosion
- 19 Ethnic groups in Madagascar
- 19 Eurasianism
- 19 Evanston, Illinois
- 19 Extremophiles
- 19 Finger Lakes
- 19 Fiordland National Park
- 19 Fish of the Arctic Ocean
- 19 Floresta Formation
- 19 Fossil record of plants
- 19 Fossils of Estonia
- 19 Fossils of Namibia
- 19 Fossils of Niger
- 19 Fossil taxa described in 1856
- 19 Fossil taxa described in 1882
- 19 Fossil taxa described in 1894
- 19 Fossil taxa described in 1910
- 19 Fossil taxa described in 1936
- 19 Fossil taxa described in 1966
- 19 Fossil taxa described in 1982
- 19 Freshwater ecology
- 19 Geography of Greenland
- 19 Geologic formations of Russia
- 19 Geology of New Zealand
- 19 Geomorphology stubs
- 19 Glacial erratics of Washington (state)
- 19 Glaciers
- 19 Great Salt Lake Desert
- 19 Gulf of Corinth
- 19 Gulf of Panama
- 19 Gulfs of Greece
- 19 Gunnison River
- 19 Heligoland
- 19 Hexafluorophosphates
- 19 Highest points of Brazilian states
- 19 Hochelaga Archipelago
- 19 Hvar
- 19 Ice caves
- 19 Islands of Cuba
- 19 Islands of the Seto Inland Sea
- 19 Jalisco New Generation Cartel
- 19 Java Sea
- 19 Kootenay National Park
- 19 Kowloon Bay
- 19 Kuril Islands
- 19 Lakes of Croatia
- 19 Lakes of Hungary
- 19 Lake Tanganyika
- 19 Landforms of Algeria
- 19 Landforms of Attica
- 19 Landforms of Batangas
- 19 Landforms of Santa Cruz Province, Argentina
- 19 Landforms of Southwest Finland
- 19 Landforms of the South Aegean
- 19 Landforms of the Tasman District
- 19 Lane Cove River
- 19 Limestone churches in the United States
- 19 Lists of beaches by country
- 19 Lithium minerals
- 19 Long Beach Island
- 19 Malvern Hills
- 19 Mediterranean Region, Turkey
- 19 Megathrust earthquakes in Chile
- 19 Messinian
- 19 Methane
- 19 Mica group
- 19 Military facilities in the Mojave Desert
- 19 Miocene Series of North America
- 19 Modoc National Forest
- 19 Mountain passes of Afghanistan
- 19 Mountain passes of China
- 19 Mountain ranges of Tajikistan
- 19 Mountain ranges of Ukraine
- 19 Mountain resorts in Armenia
- 19 Mountains of North America
- 19 Mountains of Portugal
- 19 Mountains of the Desolation Wilderness
- 19 Mountains of the Julian Alps
- 19 Mozambique Channel
- 19 Mud volcanoes
- 19 Native American history of Michigan
- 19 Native American tribes in Wisconsin
- 19 Oates Land glacier stubs
- 19 Oceania stubs
- 19 Okataina Volcanic Centre
- 19 Oronyms
- 19 Paleontological sites of Europe
- 19 Paleontology in Chile
- 19 Peninsulas of Estonia
- 19 Permaculture
- 19 Plateaus of Africa
- 19 Plateaus of Australia
- 19 Polar regions of the Earth
- 19 Populated places in the Sonoran Desert of Mexico
- 19 Populated places on the Aare
- 19 Populated places on the Nile
- 19 Precambrian United States
- 19 Protected areas of the Great Basin
- 19 Pyrophosphates
- 19 Quarries in the Mendip Hills
- 19 Quarries
- 19 Rivers of Ghana
- 19 Rivers of Kenya
- 19 River Usk
- 19 Russian Hill, San Francisco
- 19 Sandstone formations of Canada
- 19 Santos Basin
- 19 Seismologists
- 19 Seven Summits
- 19 Severn drainage basin
- 19 Sinkholes of the United States
- 19 Soil in the United States
- 19 Stolen and missing moon rocks
- 19 Stone Age
- 19 Stratigraphy of Saskatchewan
- 19 Table Mountain
- 19 Temescal Mountains
- 19 Thioesters
- 19 Topatopa Mountains
- 19 Transhumance
- 19 Trinity River (Texas)
- 19 Tugboats on the Great Lakes
- 19 Vale of Neath
- 19 Wallacea
- 19 Waterfalls of Germany
- 19 Waterfalls of New Zealand
- 19 Waterfalls of Yosemite National Park
- 19 Wellington Harbour
- 19 Yellowstone hotspot
- 19 Yuba River
- 200 North American desert flora
- 200 Palearctic ecoregions
- 201 Extinct volcanoes
- 201 Rivers of Spain
- 20 2009 earthquakes
- 20 2012 earthquakes
- 20 2019 earthquakes
- 202 Drought tolerant trees
- 202 Dune (franchise) element redirects to lists
- 205 Islands of Greece
- 206 Shipwrecks in the Atlantic Ocean
- 208 Murray Darling basin
- 20 Andros, Bahamas
- 20 Antarctica stubs
- 20 Apollo 12
- 20 Aquariums
- 20 Aquifers
- 20 Badlands of the United States
- 20 Behavioral ecology
- 20 Beryllium minerals
- 20 Bissekty Formation
- 20 Canadian surveyors
- 20 Canyonlands National Park
- 20 Cetacean research and conservation
- 20 Channel Islands of California
- 20 Chert
- 20 Cheyenne tribe
- 20 Comanche people
- 20 Coral islands
- 20 Coral Sea Islands
- 20 Cree
- 20 Cretaceous Canada
- 20 Crowley's Ridge
- 20 Destination spas
- 20 Devonian southern paleotemperate deposits
- 20 Devonian System of North America
- 20 Documentary films about prehistoric life
- 20 Drainage basins of the Pacific Ocean
- 20 Dune (franchise) organizations
- 20 Dunes of the United States
- 20 Earthquake and seismic risk mitigation
- 20 Ecofeminists
- 20 Ecology books
- 20 Endorheic lakes of Africa
- 20 Escarpments of Antarctica
- 20 Escarpments of the United States
- 20 Eurasian Steppe
- 20 Figure skating stubs
- 20 Flat Earth proponents
- 20 Forez
- 20 Fossils of Kazakhstan
- 20 Fossil taxa described in 1869
- 20 Fossil taxa described in 1870
- 20 Fossil taxa described in 1874
- 20 Fossil taxa described in 1911
- 20 Fossil taxa described in 1928
- 20 Fossil taxa described in 1992
- 20 Geological features on the Moon
- 20 Geologic groups of South America
- 20 Geology of Yosemite National Park
- 20 Glacial lakes of France
- 20 Happy Valley, Hong Kong
- 20 Hills of London
- 20 History of Manhattan
- 20 History of Sicily
- 20 History of South Georgia and the South Sandwich Islands
- 20 History of the Americas
- 20 History of Zanzibar
- 20 Honda Group, Colombia
- 20 Hong Kong Island
- 20 Humboldt River
- 20 Hyde Park, London
- 20 Hydrogeology
- 20 International lakes of Africa
- 20 Islands of Bermuda
- 20 Islands of Cambodia
- 20 Itaboraian
- 20 Jurassic stubs
- 20 Kaibab National Forest
- 20 Karst formations
- 20 Kura Araxes culture
- 20 Lakes of Iran
- 20 Lakes of Kosovo
- 20 Landforms of Antalya Province
- 20 Landforms of Arcadia
- 20 Landforms of Crete
- 20 Landforms of Laguna (province)
- 20 Landforms of Nantou County
- 20 Landforms of Normandy
- 20 Landforms of North Rhine Westphalia
- 20 Landforms of Rio de Janeiro (state)
- 20 Landforms of Siberia
- 20 Landforms of Taichung
- 20 Landforms of West Papua (province)
- 20 Lehigh Valley
- 20 Ligurian Sea
- 20 Marble sculptures in the United States
- 20 Mayacamas Mountains
- 20 Mexican Plateau
- 20 Michigan City, Indiana
- 20 Microbiomes
- 20 Mining company logos
- 20 Mountain ranges of Thailand
- 20 Mountain ranges of Turkey
- 20 Native American tribes in Michigan
- 20 New Zealand seafloor (oceanography)
- 20 Ngau Chi Wan
- 20 Oil fields of Scotland
- 20 Organic disulfides
- 20 Ouachita Mountains
- 20 Paleoartists
- 20 Paleontology in Arizona
- 20 People from Jalisco
- 20 Pheromones
- 20 Physiographic regions of the United States
- 20 Plants extinct in the wild
- 20 Pleistocene Bolivia
- 20 Pleistocene Colombia
- 20 Prehistoric plants of North America
- 20 Raditladi quadrangle
- 20 Reservoirs in Sydney
- 20 Reuss basin
- 20 Rhaetian Stage
- 20 Ridges of Europe
- 20 Rivers of Botswana
- 20 Rivers of Guatemala
- 20 Rivers of Hong Kong
- 20 Rivers of Kyrgyzstan
- 20 Rivers of Morocco
- 20 Rivers of South Korea
- 20 Rivers of Tanzania
- 20 Rivers of the United Arab Emirates
- 20 River Tamar
- 20 Saanich Peninsula
- 20 Saginaw Bay
- 20 Saints from Anatolia
- 20 Salton Sea
- 20 San Gabriel River (California)
- 20 Saskatchewan River
- 20 Sediments
- 20 Six Rivers National Forest
- 20 Sonoma Valley
- 20 Spa towns in Slovenia
- 20 Stamp mills
- 20 Stonemasons
- 20 Sulfur amino acids
- 20 Sulfur compounds
- 20 Surface features of Titan (moon)
- 20 Television series about dinosaurs
- 20 Terrestrial biomes
- 20 The Dark Tower (comics)
- 20 Tributaries of the Indus River
- 20 Tributaries of the Wabash River
- 20 Trinity Mountains (California)
- 20 Tularosa Basin
- 20 Tundra
- 20 Types of cyclone
- 20 Victims of aviation accidents or incidents in international waters
- 20 Women geophysicists
- 20 Zambezi River
- 21 2008 earthquakes
- 21 2017 earthquakes
- 213 Rivers of Indonesia
- 214 Antibiotic stubs
- 217 Calcium minerals
- 217 Scottish clans
- 21 Aerospace
- 21 Afromontane
- 21 Agroecology
- 21 American geochemists
- 21 Ancient lakes
- 21 Andaman Sea
- 21 Bale Mountains
- 21 Banks Peninsula
- 21 Block waterfalls
- 21 Callovian Stage
- 21 Capitol Reef National Park
- 21 Caves
- 21 Caves of Iran
- 21 Chaco Canyon
- 21 Chaco Culture National Historical Park
- 21 Chapadmalalan
- 21 Chasicoan
- 21 Chihuahuan Desert
- 21 Cowichan Valley
- 21 Dinosaur anatomy
- 21 Divisaderan
- 21 Don River (Ontario)
- 21 Ecological succession
- 21 Ecoregions of Malesia
- 21 Ecoregions of Peru
- 21 Ecotourism
- 21 Environmental education
- 21 Epic of Gilgamesh
- 21 Ergs
- 21 Extinct plants
- 21 Fossiliferous stratigraphic units of Oceania
- 21 Fossils
- 21 Fossils of Belgium
- 21 Fossils of Egypt
- 21 Fossils of Scotland
- 21 Fossil taxa described in 1871
- 21 Fossil taxa described in 1878
- 21 Fossil taxa described in 1915
- 21 Fossil taxa described in 1972
- 21 Fossil taxa described in 1973
- 21 Fossil taxa described in 1988
- 21 Gasteria
- 21 Geodetic datums
- 21 Geology of the Atlantic Ocean
- 21 Gobi Desert
- 21 Godavari basin
- 21 Green River (Colorado River tributary)
- 21 Guadalupe River (Texas)
- 21 Highest points of historic Scottish counties
- 21 Historical oceans
- 21 Ionosphere
- 21 Island countries of the Indian Ocean
- 21 Islands of Iran
- 21 Islands of Palau
- 21 Islands of the British Virgin Islands
- 21 Isle of Arran
- 21 Isle of Bute
- 21 Jade
- 21 Karst springs
- 21 King Island (Tasmania)
- 21 Klamath River
- 21 Lakes by type
- 21 Lakes of Ethiopia
- 21 Lakes of Sri Lanka
- 21 Landforms of Aomori Prefecture
- 21 Landforms of Cephalonia
- 21 Landforms of Heraklion (regional unit)
- 21 Landforms of Hokkaido
- 21 Landforms of Mersin Province
- 21 Landforms of Yellowstone National Park
- 21 Limestone buildings
- 21 Megathrust earthquakes in Japan
- 21 Mesolithic Europe
- 21 Military history of the English Channel
- 21 Mining equipment companies
- 21 Mining
- 21 Mississippi River watershed
- 21 Mogollon Rim
- 21 Mountain passes of Spain
- 21 Mountain ranges of Norway
- 21 Mountains of Romania
- 21 Mount Tamalpais
- 21 Natural regions of South America
- 21 Oases of China
- 21 Obsolete pesticides
- 21 Oil spills
- 21 Olifants River (Limpopo)
- 21 Ordovician Bolivia
- 21 Organic farming
- 21 Paleontology in Sichuan
- 21 Patterned grounds
- 21 Phoenix Park
- 21 Pliensbachian life
- 21 Quartzite formations
- 21 Red River of the South
- 21 Rivers of Azerbaijan
- 21 Rivers of Jamaica
- 21 Rivers of Uganda
- 21 Ryukyu Kingdom
- 21 Sacramento River
- 21 Santa Maria Formation
- 21 Sedimentary basins of North America
- 21 Show caves in the United Kingdom
- 21 Spa towns in the United States
- 21 Subglacial volcanoes of Iceland
- 21 Subranges of the Appalachian Mountains
- 21 Taiwan Strait
- 21 Television shows set on islands
- 21 Thar Desert
- 21 Tide mills
- 21 Triassic stubs
- 21 Tuff cones
- 21 Unadilla class gunboats
- 21 Uninhabited islands of the Pacific Ocean
- 21 Valleys of Spain
- 21 WAAS reference stations
- 21 Westfjords
- 21 Works about mining
- 21 Zoos
- 22 2014 earthquakes
- 22 2nd millennium BC establishments
- 22 Aerospace museums
- 22 American Heritage Rivers
- 22 American mineralogists
- 22 American River (California)
- 22 Aran Islands
- 22 Archaeological sites in Texas
- 22 Arrow Lakes
- 22 Artificial lakes of the United States
- 22 Atmospheric ghost lights
- 22 Bandy stubs
- 22 Biological interactions
- 22 Birds in popular culture
- 22 Black Isle
- 22 Bodies of ice
- 22 British surveyors
- 22 Bulgarian Black Sea Coast
- 22 Byzantine Anatolia
- 22 Cambrian System of North America
- 22 Carboniferous animal stubs
- 22 Carmarthen Bay
- 22 Cave monasteries
- 22 Cibola National Forest
- 22 Clarendonian
- 22 Colorado River Storage Project
- 22 Colorado Western Slope
- 22 Cretaceous volcanism
- 22 Dams on the Godavari River
- 22 Danian Stage
- 22 Ecologists
- 22 Ecology organizations
- 22 Ecoregions
- 22 Eurasia
- 22 Europe mountain stubs
- 22 Farsund
- 22 Films set in the Baltic Sea
- 22 Floodplains of Australia
- 22 Flood stubs
- 22 Fossils of Antarctica
- 22 Fossil taxa described in 1872
- 22 Fossil taxa described in 1889
- 22 Fossil taxa described in 1892
- 22 Fossil taxa described in 1904
- 22 Fossil taxa described in 1930
- 22 Fossil taxa described in 1969
- 22 Fox Islands (Alaska)
- 22 Geological periods
- 22 Geologic formations with imbedded sand dunes
- 22 Georges River
- 22 Glen Canyon National Recreation Area
- 22 Government of New Zealand
- 22 Historical regions of Anatolia
- 22 Ice hockey equipment
- 22 Ischigualasto Formation
- 22 Islands
- 22 Islands of Bahrain
- 22 Islands of the Red Sea
- 22 Islands of the Saint Lawrence River
- 22 Kintyre
- 22 Lake Huron
- 22 Lake Superior
- 22 Landforms of Aetolia Acarnania
- 22 Landforms of Badakhshan Province
- 22 Landforms of Central Greece
- 22 Landforms of East Nusa Tenggara
- 22 Landforms of Ioannina (regional unit)
- 22 Landforms of Lapland (Finland)
- 22 Landforms of North Sulawesi
- 22 Landforms of Peloponnese (region)
- 22 Land surveying of the United States
- 22 Laptev Sea
- 22 Lighthouses in Ontario
- 22 Lists of lakes of the United States
- 22 Locks (water transport)
- 22 Lowest points
- 22 Lunar crater stubs
- 22 Marine conservation
- 22 Merged fictional characters
- 22 Meridians and base lines of the United States
- 22 Mohawk River
- 22 Mountain ranges of Algeria
- 22 Mountain ranges of Colombia
- 22 Mountain ranges of Peru
- 22 Mountains of Kenya
- 22 Mountains of Sequoia National Park
- 22 Mountains of Sri Lanka
- 22 Mount Rainier
- 22 Natural regions of Africa
- 22 Near Earth objects removed from the Sentry Risk Table
- 22 Niobium minerals
- 22 Ordovician animal stubs
- 22 Ordovician System of North America
- 22 Oregon Coast Range
- 22 Organic minerals
- 22 Paleogene volcanism
- 22 Paleontology in Gansu
- 22 Paleontology in Queensland
- 22 Paleontology stubs
- 22 Palos Verdes Peninsula
- 22 Peninsulas of Japan
- 22 People in the petroleum industry
- 22 Politics of New Zealand
- 22 Populated places on the Glomma River
- 22 Precious metals
- 22 Rivers of Algeria
- 22 Rivers of Costa Rica
- 22 Rivers of Guinea
- 22 Rivers of Mozambique
- 22 Rocks
- 22 San Joaquin Hills
- 22 Sedimentary structures
- 22 Show caves
- 22 Sonoma Mountains
- 22 Stonehenge
- 22 Structural analysis
- 22 Surface features of Ceres
- 22 Triassic Germany
- 22 Tropical and subtropical coniferous forests
- 22 Underground mining
- 22 Vallata dello Stilaro
- 22 Valleys of Afghanistan
- 22 Valsassina
- 22 Volcanoes of Papua New Guinea
- 22 Volcanoes of the Atlantic Ocean
- 22 Water resource regions
- 22 Waukegan, Illinois
- 22 Western Armenia
- 22 Wildfire ecology
- 231 Mudstone formations
- 23 2011 earthquakes
- 23 2016 earthquakes
- 232 Siltstone formations
- 236 Shallow marine deposits
- 238 Border rivers
- 238 Flora of the Cascade Range
- 238 Waterfall stubs
- 23 Acaricides
- 23 Aeolian deposits
- 23 Andreanof Islands
- 23 Anti tuberculosis drugs
- 23 Atolls of Kiribati
- 23 Bays of Estonia
- 23 Beaches of Cape Verde
- 23 Blythe, California
- 23 British rock climbers
- 23 Buildings and structures made of snow or ice
- 23 Carbamate insecticides
- 23 Cliff dwellings
- 23 Convention on the Conservation of Migratory Species of Wild Animals
- 23 Currents of the Atlantic Ocean
- 23 Dalian
- 23 Ecoregions of Argentina
- 23 Fjords of Spitsbergen
- 23 Flood myths
- 23 Flora of the Canadian Prairies
- 23 Former islands from the last glacial maximum
- 23 Fossils of Madagascar
- 23 Fossils of Uzbekistan
- 23 Fossil taxa described in 1876
- 23 Fossil taxa described in 1903
- 23 Fossil taxa described in 1914
- 23 Fossil taxa described in 1923
- 23 Fossil taxa described in 1924
- 23 Fossil taxa described in 1935
- 23 Fossil taxa described in 1985
- 23 Geological history of the Great Lakes
- 23 Highest points of Chinese provinces
- 23 Hindu Kush
- 23 History of Bali
- 23 History of the Isle of Man
- 23 Ice shelves of Antarctica
- 23 Index fossils
- 23 International islands
- 23 Isla Grande de Tierra del Fuego
- 23 Islay
- 23 Jurassic first appearances
- 23 Jurassic France
- 23 Jurassic plants
- 23 Kiowa people
- 23 Lake Erie
- 23 Lakes of the Great Rift Valley
- 23 Landforms of Euboea (regional unit)
- 23 Landforms of Hualien County
- 23 Landforms of Los Lagos Region
- 23 Landforms of New Taipei
- 23 Landforms of Sofia Province
- 23 Little Kanawha River
- 23 Loch Lomond
- 23 Lost fossils
- 23 Lower Cretaceous Series of North America
- 23 Marine conservation organizations
- 23 Meteorites found in the United States
- 23 Meteorite stubs
- 23 Mexico City metropolitan area
- 23 Mining industry by country
- 23 Mountain passes of the Sierra Nevada (U S )
- 23 Mountain passes of the Sierra Nevada (U.S.)
- 23 Mountain ranges of Kyrgyzstan
- 23 Mountain ranges of the San Francisco Bay Area
- 23 Mountains and hills of the Eastern Highlands
- 23 Mountains
- 23 Mount Fuji
- 23 Mycenaean Greece
- 23 National parks of South Africa
- 23 Paleontology in Yunnan
- 23 People from Bornholm
- 23 Permafrost
- 23 Petroleum economics
- 23 Plains on Mars
- 23 Pleistocene Oceania
- 23 Protected areas on the Colorado River
- 23 Proterozoic impact craters
- 23 Rhondda Valley
- 23 Rivers of North Macedonia
- 23 Rivers of Uruguay
- 23 Romualdo Formation
- 23 Saharan rock art
- 23 Sandstone churches in Australia
- 23 San Emigdio Mountains
- 23 Sierra Madre de Chiapas
- 23 Spa towns in Bulgaria
- 23 Speleothems
- 23 Spring Mountains
- 23 Stacks (geology)
- 23 Stanislaus National Forest
- 23 Stone buildings
- 23 Strait of Magellan
- 23 Tonopah and Tidewater Railroad
- 23 Tributaries of the Don
- 23 Valleys of the Mojave Desert
- 23 Vitis
- 23 Volcanoes of Io (moon)
- 23 Volcanoes of Peru
- 23 White Sea fossils
- 23 White Sea
- 23 Yaylas in Turkey
- 23 Zealandia
- 24 19th century volcanic events
- 243 Graham Land glacier stubs
- 244 Limestone formations
- 244 Rivers of Poland
- 244 Volcanic crater lakes
- 249 Orthorhombic minerals
- 24 Alpine National Park
- 24 Anaerobic digestion
- 24 Arizona transition zone mountain ranges
- 24 Baffin Island
- 24 Bajocian Stage
- 24 Bays of Japan
- 24 Bights (geography)
- 24 Bora Bora
- 24 California Gold Rush in fiction
- 24 Caves of Georgia (country)
- 24 Caves of Mexico
- 24 Coastal basins of the Mediterranean Sea in France
- 24 Cretaceous Chile
- 24 Cyperaceae
- 24 Djadochta fauna
- 24 Drainage basins of the Tyrrhenian Sea
- 24 Earthquakes in Greece
- 24 Ecoregions of Venezuela
- 24 Europe related lists
- 24 Extinction events
- 24 Feldspar
- 24 Fictional prehistoric characters
- 24 Fissure vents
- 24 Flood barriers
- 24 Fluorine minerals
- 24 Fossils of Myanmar
- 24 Fossils of Uruguay
- 24 Fossil taxa described in 1859
- 24 Fossil taxa described in 1877
- 24 Fossil taxa described in 1895
- 24 Fossil taxa described in 1932
- 24 Fossil taxa described in 1970
- 24 Fossil taxa described in 1977
- 24 Fossil taxa described in 1993
- 24 Free soloists
- 24 Geologic formations of Panama
- 24 Geologic formations of the United Kingdom
- 24 Geothermal energy
- 24 Great Sioux War of 1876
- 24 Gulf of Oman
- 24 Hamstone buildings
- 24 Hayling Island
- 24 History of Staten Island
- 24 History of the British Isles
- 24 History of the Sahara
- 24 History of Vancouver Island
- 24 Hopewellian peoples
- 24 Human overpopulation
- 24 Indio, California
- 24 Islands of the East China Sea
- 24 Islands of the Labrador Sea
- 24 Islands of the Pacific Ocean
- 24 Islands of the United States Virgin Islands
- 24 Jurassic South Africa
- 24 Kent Island, Maryland
- 24 Lakes of Titan (moon)
- 24 Land artists
- 24 Landforms of Andalusia
- 24 Landforms of Bukidnon
- 24 Landforms of Central Finland
- 24 Landforms of the Northland Region
- 24 Landforms of the Sierra Nevada (U S )
- 24 Landforms of the Sierra Nevada (U.S.)
- 24 Landforms of Yosemite National Park
- 24 Laurel Highlands
- 24 Liquid crystals
- 24 Lists of birds by population
- 24 Manganese minerals
- 24 Marina Bay, Singapore
- 24 Mayoan
- 24 Mesozoic rifts and grabens
- 24 Meteorite minerals
- 24 Mountain ranges of Brazil
- 24 Mountain ranges of China
- 24 Natural arches of Scotland
- 24 Nature conservation in India
- 24 Nature conservation in New Zealand
- 24 Neolithic sites
- 24 New Zealand surveyors
- 24 Norian Stage
- 24 Ore deposits
- 24 Paleontology in Bolivia
- 24 Paleontology in Colombia
- 24 Paleontology in South Dakota
- 24 Peak oil
- 24 Pearls
- 24 Peninsulas of New Zealand
- 24 Rivers of Ecuador
- 24 Rivers of Mongolia
- 24 Rivers of the Pacific Ranges
- 24 River valleys of the United States
- 24 Rogue River (Oregon)
- 24 Roosevelt National Forest
- 24 Sandstone
- 24 Sea caves
- 24 Show mines
- 24 Sinemurian life
- 24 Smoke
- 24 Snake River
- 24 Superior National Forest
- 24 Sustainable gardening
- 24 Terracotta sculptures
- 24 Thanetian Stage
- 24 Tonto National Forest
- 24 Triglav National Park
- 24 Trossachs
- 24 Turn of the third millennium
- 24 Uncompahgre National Forest
- 24 Vaca Mountains
- 24 Wasatchian
- 24 Zirconium minerals
- 25 2018 earthquakes
- 257 Africa river stubs
- 259 Rivers of India
- 25 Africa related lists
- 25 Apache Sitgreaves National Forests
- 25 Aulacogens
- 25 Bathonian life
- 25 Battles in medieval Anatolia
- 25 Bronze Age
- 25 Burdigalian
- 25 Burgess Shale animals
- 25 Carboniferous plants
- 25 Caves of Gibraltar
- 25 Cenozoic rifts and grabens
- 25 Chapultepec
- 25 Cities destroyed by earthquakes
- 25 Countries in North America
- 25 Deseadan
- 25 Earthquakes in the Philippines
- 25 Ecoregions of South America
- 25 Elephant Island
- 25 Events that forced the climate
- 25 Fictional characters with earth or stone abilities
- 25 Fjords of Iceland
- 25 Fossils of Greenland
- 25 Fossil taxa described in 1843
- 25 Fossil taxa described in 1873
- 25 Fossil taxa described in 1913
- 25 Fossil taxa described in 1981
- 25 Fossil taxa described in 1987
- 25 Fossil taxa described in 1990
- 25 French mineralogists
- 25 Freshwater ecoregions
- 25 Geography of North America
- 25 Geological history of Earth
- 25 Geologic formations of the United States
- 25 Guano trade
- 25 Highest points of Indian states and union territories
- 25 Historical continents
- 25 History of Bahrain
- 25 History of Bermuda
- 25 History of Samoa
- 25 Holocene
- 25 Human evolution books
- 25 Impact craters on asteroids
- 25 Indigenous languages of the North American Plains
- 25 International lakes of North America
- 25 Islands of Myanmar
- 25 Islands of New York City
- 25 Islands of Tonga
- 25 Lake Zurich
- 25 Landforms of Pingtung County
- 25 Landforms of the Auckland Region
- 25 Lists of earthquakes by country
- 25 Lists of lakes by country
- 25 Marine geology
- 25 Menai Strait
- 25 Miners' labor disputes
- 25 Modern Earth impact events
- 25 Mountain ranges of Europe
- 25 Mountain ranges of Greenland
- 25 Mountain ranges of Mexico
- 25 Mountain ranges of New Zealand
- 25 Mountains of Costa Rica
- 25 Mountains of Guatemala
- 25 Mountains of Pirin
- 25 Natural features on the National Register of Historic Places
- 25 Natural gas fields in the United States
- 25 Natural history of Sonora
- 25 Oceans
- 25 Ogham inscriptions
- 25 Paleoanthropologists
- 25 Paleontology books
- 25 Paleontology in Liaoning
- 25 Paleontology in South Africa
- 25 Phospholipids
- 25 Plutonic rocks
- 25 Ponds
- 25 Regent's Park
- 25 Rivers of Afghanistan
- 25 Russian paleontologists
- 25 San Jacinto Mountains
- 25 San Joaquin River
- 25 Singapore River
- 25 Skerries of Scotland
- 25 Stanley Park
- 25 Steamboats by body of water
- 25 Submarine calderas
- 25 Surface features of Venus
- 25 Swansea Bay
- 25 Taxa named by Johann Andreas Wagner
- 25 Tides
- 25 Tiergarten (park)
- 25 Triassic South Africa
- 25 Uquian
- 25 Volcanoes
- 25 Willamette River
- 262 Glacial lakes of the United States
- 265 Asia river stubs
- 26 Achondrite meteorites
- 26 Afromontane ecoregions
- 26 Atmospheric dispersion modeling
- 26 Barium minerals
- 26 Beaches of Brazil
- 26 Borate minerals
- 26 BP oil and gas fields
- 26 Bristol Channel
- 26 Bunchgrasses of South America
- 26 Climate change
- 26 Climate change stubs
- 26 Coastal basins of the English Channel in France
- 26 Colhuehuapian
- 26 Cotton
- 26 Devonian Colombia
- 26 Ecoregions of Africa
- 26 European Southern Observatory
- 26 Films about earthquakes
- 26 Florida Keys
- 26 Former countries in Oceania
- 26 Former islands of the United States
- 26 Fossil taxa described in 1937
- 26 Fossil taxa described in 1964
- 26 Fossil taxa described in 1980
- 26 Fossil taxa described in 1986
- 26 Geography of Antarctica
- 26 Gilbert Islands
- 26 Gower Peninsula
- 26 Gulfs of the Mediterranean
- 26 Halide mineral stubs
- 26 Hemphillian
- 26 History of Hispaniola
- 26 History of metallurgy
- 26 History of North America
- 26 History of the Falkland Islands
- 26 Impact crater lakes
- 26 Investigator Strait
- 26 Iron(II,III) minerals
- 26 Lakes of Berlin
- 26 Landforms of Antofagasta Region
- 26 Lightning
- 26 Lists of drainage basins
- 26 Lists of trees
- 26 Lists of volcanoes
- 26 Los Angeles River
- 26 LQ17 quadrangle
- 26 Malay Peninsula
- 26 Maritime transport
- 26 Merced River
- 26 Mining company stubs
- 26 Mooreville Chalk
- 26 Mountain ranges of San Diego County, California
- 26 Mountains of Kosovo
- 26 Mountains of Morocco
- 26 Mountains on Mars
- 26 Napa Valley
- 26 National mapping agencies
- 26 Oceanaria
- 26 Oceanian ecoregions
- 26 Oil fields in Norway
- 26 Oil platforms
- 26 Paleogene France
- 26 Palm Springs, California
- 26 Peninsulas of Russia
- 26 People from Zacatecas
- 26 Persistent organic pollutants under the Stockholm Convention
- 26 Picos de Europa
- 26 Pleistocene Brazil
- 26 Pliocene first appearances
- 26 Populated places on the River Shannon
- 26 Prescott National Forest
- 26 Ridges on the Moon
- 26 Rio Grande National Forest
- 26 Rivers of Albania
- 26 Rivers of Cameroon
- 26 San Rafael Hills
- 26 Sewerage infrastructure
- 26 Shakespeare quadrangle
- 26 Ships powered by a triple expansion steam engine
- 26 Sinemurian Stage
- 26 Soil mechanics
- 26 Sulfones
- 26 Trails
- 26 Tributaries of Delaware Bay
- 26 Undersea banks of the Southern Ocean
- 26 Upper Cretaceous Series of Europe
- 26 Volcanoes of Mars
- 26 Volcanoes of the Pacific Ocean
- 26 Wildlife conservation
- 270 Impact craters on Mercury
- 27 2010 earthquakes
- 278 Fluvial deposits
- 27 Active faults
- 27 Alabaster
- 27 Arabian Peninsula
- 27 Arboreta
- 27 Arroyo Seco (Los Angeles County)
- 27 Beaches
- 27 Bismarck Archipelago
- 27 Carnian Stage
- 27 Caves of South Africa
- 27 Caves of Spain
- 27 Delaware River
- 27 Discovery quadrangle
- 27 Dudleya
- 27 Extant Late Pleistocene first appearances
- 27 Fictional ants
- 27 Filchner Ronne Ice Shelf
- 27 Fossils of Poland
- 27 Fossils of Portugal
- 27 Fossil taxa described in 1868
- 27 Fossil taxa described in 1975
- 27 Gold compounds
- 27 Guanabara Bay
- 27 Hawaiian Kingdom
- 27 Headlands of Japan
- 27 Highest points of Swiss cantons
- 27 History of Antarctica
- 27 History of Hokkaido
- 27 History of Sardinia
- 27 Hunter River (New South Wales)
- 27 Hydrology stubs
- 27 Industrial ecology
- 27 Islands of Greenland
- 27 Islands of Taiwan
- 27 Jurassic System of South America
- 27 Klondike Mountain Formation
- 27 Lake Michigan
- 27 Landforms of Achaea
- 27 Landforms of Burgas Province
- 27 Landforms of Chania (regional unit)
- 27 Landforms of Puget Sound
- 27 Landscape ecology
- 27 LQ08 quadrangle
- 27 Madrean Sky Islands mountain ranges
- 27 Mining law and governance
- 27 Mount Adams (Washington)
- 27 Mountaineering equipment
- 27 Mountains of Papua New Guinea
- 27 Natural regions of Germany
- 27 Nemegt fauna
- 27 Permian South Africa
- 27 Petroleum products
- 27 Plateaus of the United States
- 27 Prison islands
- 27 Protected areas of the Appalachians
- 27 Radioactively contaminated areas
- 27 Rivers of Iceland
- 27 Rivers of Sri Lanka
- 27 Rodenticides
- 27 Salinas River (California)
- 27 Tectosilicates
- 27 Tidal deposits
- 27 Toarcian life
- 27 Tributaries of the Rio Grande
- 27 Volcanism
- 27 Volcanoes of Mexico
- 27 Wilderness Areas within the Lower Colorado River Valley
- 282 Fossils of Argentina
- 283 Subduction volcanoes
- 28 4th millennium BC establishments
- 285 Flora of the Great Basin
- 289 Cities in the Great Rift Valley
- 289 Flora of the Klamath Mountains
- 28 Adriatic Sea
- 28 Antarctic region
- 28 Apache people
- 28 Ardnamurchan
- 28 Bays of the Philippines
- 28 Bodies of water of the Ozarks
- 28 Carboniferous stubs
- 28 Casco Bay
- 28 Colloncuran
- 28 Comanche tribe
- 28 Cretaceous extinctions
- 28 Davis Strait
- 28 Devonian first appearances
- 28 Earthquakes in New Zealand
- 28 Ecological economists
- 28 Ecoregions of the Democratic Republic of the Congo
- 28 Ediacaran biota stubs
- 28 Fauna of the Lower Colorado River Valley
- 28 Fire Island, New York
- 28 Fossils of Norway
- 28 Fossil taxa described in 1933
- 28 Geographic coordinate systems
- 28 Gold standard
- 28 Green Spain
- 28 Grottoes
- 28 Gulf of Aden
- 28 Gulf of Riga
- 28 Islands of Cape Verde
- 28 Islands of the Bering Sea
- 28 Islands of the Kara Sea
- 28 Islands of the Yellow Sea
- 28 Kern River Valley
- 28 Kimmeridgian Stage
- 28 Lakes of Yosemite National Park
- 28 Landforms of Central Macedonia
- 28 Landforms of Otago
- 28 Landforms of Papua (province)
- 28 Landforms of the Wellington Region
- 28 Lau Islands
- 28 Lava plateaus
- 28 Military history of the Mediterranean
- 28 Mountains of Colombia
- 28 Mountains of Saxon Switzerland
- 28 Mount Shasta
- 28 Muskingum River
- 28 New England Hundred Highest
- 28 Palmer Land glacier stubs
- 28 Panamint Range
- 28 Persian Gulf
- 28 Petrologists
- 28 Pike National Forest
- 28 Pleistocene Argentina
- 28 Politics of Africa
- 28 Reykjanes
- 28 Rifts and grabens
- 28 Riparian zone
- 28 Rivers of the Ore Mountains
- 28 Rivers of Toronto
- 28 Rock cut tombs
- 28 Shrunken lakes
- 28 Subglacial volcanoes of Alaska
- 28 Tahoe National Forest
- 28 Taunton River watershed
- 28 Tributaries of the James River
- 28 Upper Cretaceous Series of Africa
- 28 Valley of Mexico
- 28 Wallkill River
- 28 Water transport infrastructure
- 28 Western Canadian Sedimentary Basin
- 292 Mountain ranges of Nevada
- 294 Flora of the Sonoran Deserts
- 29 Air pollution control systems
- 29 Appalachian Mountains
- 29 Archipelagoes of Japan
- 29 Atolls of the Marshall Islands
- 29 Blood diamonds
- 29 Catastrophism
- 29 Climate forcing
- 29 Colorado Desert
- 29 Copper minerals
- 29 Cretaceous France
- 29 Cuyamaca Mountains
- 29 Early Modern period
- 29 Eldorado National Forest
- 29 Endemic fauna of Texas
- 29 English palaeontologists
- 29 Ensenadan
- 29 Fossil taxa described in 1887
- 29 Fossil taxa described in 1978
- 29 Geologic formations of Bolivia
- 29 Great Lakes tribes
- 29 Habitat management equipment and methods
- 29 Headlands of Cape Verde
- 29 Hills of San Francisco
- 29 Impact craters on Venus
- 29 Lakes of Greece
- 29 Lakota people
- 29 LQ25 quadrangle
- 29 Marble
- 29 Mid Atlantic Ridge
- 29 Mining trade unions
- 29 Mountains of Saudi Arabia
- 29 Niagara Falls
- 29 Norian life
- 29 Oases of Libya
- 29 Populated places on the Yangtze River
- 29 Reefs of the Pacific Ocean
- 29 River Severn
- 29 Rivers in Buddhism
- 29 Rivers of Israel
- 29 River Wye
- 29 Sacred rocks
- 29 San Pablo Bay
- 29 Santonian life
- 29 Santorini
- 29 Spa towns in Romania
- 29 Thuringian Forest
- 29 Traverse City, Michigan
- 29 Tweed catchment
- 29 United States Geological Survey
- 29 Valleys of Switzerland
- 29 Wenatchee National Forest
- 29 Wilsons Promontory
- 305 Fish of the Indian Ocean
- 30 Ancient peoples of Anatolia
- 30 Arapaho National Forest
- 30 Archipelagoes of the Atlantic Ocean
- 30 Atolls of the Maldives
- 30 Bavarian Forest
- 30 Blizzards in Canada
- 30 Broadback River drainage basin
- 30 Canadian ecologists
- 30 Cleveland National Forest
- 30 Deaths from mesothelioma
- 30 Detroit River
- 30 Drainage basins
- 30 Dune (franchise) novels
- 30 Ecology journals
- 30 Endangered species
- 30 Eocene Series of North America
- 30 Fauna of the Great Plains
- 30 Fossil taxa described in 1979
- 30 Fossil taxa described in 1991
- 30 Geologic formations of Spain
- 30 Glacial lakes of Canada
- 30 Gulf of Tonkin
- 30 Hettangian Stage
- 30 Highland Boundary Fault
- 30 History of climate variability and change
- 30 History of Puerto Rico
- 30 Impact craters of the United States
- 30 Impact event novels
- 30 Indiana Dunes National Park
- 30 Islands of Hawaii
- 30 Jasper National Park
- 30 Jurassic animal stubs
- 30 Jurassic System of Africa
- 30 Lakes of Kazakhstan
- 30 Lakes of Nepal
- 30 Landforms of Maluku (province)
- 30 Landforms of Sofia City Province
- 30 Large igneous provinces
- 30 Lizard Peninsula
- 30 LQ16 quadrangle
- 30 Marine ecoregions
- 30 Meromictic lakes
- 30 Metamorphic petrology
- 30 Mountain ranges of India
- 30 Mountains of Brazil
- 30 Mountains of Mongolia
- 30 Mountains of the Ligurian Alps
- 30 Nantahala National Forest
- 30 Nob Hill, San Francisco
- 30 Overseas empires
- 30 Penobscot River
- 30 Permian reptile stubs
- 30 Plant toxin insecticides
- 30 Pliensbachian Stage
- 30 Populated places on the Chao Phraya River
- 30 Protected areas of the Western Carpathians
- 30 Red Sea
- 30 Rocks on Mars
- 30 Sacred lakes
- 30 San Diego Bay
- 30 Sandstone buildings in the United States
- 30 South China Sea
- 30 Southern Limestone Alps
- 30 Strait of Malacca
- 30 Subduction zones
- 30 Upper Peninsula of Michigan
- 30 Volcanoes of Italy
- 30 Volga basin
- 30 Wildland fire suppression
- 30 Wingecarribee Shire
- 314 Lakes of Peru
- 317 Shale formations
- 31 Abaco Islands
- 31 Amalfi Coast
- 31 Amazon basin
- 31 Asia stubs
- 31 Battles involving the Sioux
- 31 Biodegradable waste management
- 31 Books about animal rights
- 31 British palaeontologists
- 31 Cappadocia
- 31 Carbonate mineral stubs
- 31 Caves of Italy
- 31 Columnar basalts
- 31 Creepers of South Africa
- 31 Deep marine deposits
- 31 Eastern Plains
- 31 Ecological experiments
- 31 Endorheic lakes of Asia
- 31 Films about volcanoes
- 31 Fjords of British Columbia
- 31 Former lochs
- 31 Fossils of the Dominican Republic
- 31 Fossil taxa described in 1996
- 31 General Land Office Commissioners
- 31 Geological groups of the United Kingdom
- 31 Glaciers of Switzerland
- 31 Gold mining
- 31 Great Barrier Reef
- 31 Gulf of California
- 31 Highest points of Irish counties
- 31 History of Java
- 31 International mountains of North America
- 31 Islands of Estonia
- 31 James River (Virginia)
- 31 Lakes of Mongolia
- 31 Lakes of the Mojave Desert
- 31 Lakes of the Netherlands
- 31 Landforms of Kaohsiung
- 31 Lantau Island
- 31 Lanthanide minerals
- 31 Lee Valley Park
- 31 Lists of mountains by country
- 31 Lists of mountains by isolation
- 31 Marble sculptures in the United Kingdom
- 31 Morecambe Bay
- 31 Mountains of Croatia
- 31 Mountains of Thailand
- 31 Municipalities in El Bierzo
- 31 Niagara Escarpment
- 31 Oldest trees
- 31 Paleontological site stubs
- 31 Paleontology in Brazil
- 31 Patagonia
- 31 Permian first appearances
- 31 Permian plants
- 31 Petroleum geology
- 31 Pre Clovis archaeological sites in the Americas
- 31 Protected areas of the Sonoran Desert
- 31 Rivers of Kazakhstan
- 31 Rock shelters in the United States
- 31 Sea ice
- 31 Shield volcanoes
- 31 Shipwrecks of the Mississippi River
- 31 Sinai Peninsula
- 31 Soil improvers
- 31 Subshrubs
- 31 Sulfonates
- 31 Supervolcanoes
- 31 Swan River (Western Australia)
- 31 Systems ecology
- 31 Terranes
- 31 Trace fossil stubs
- 31 Waterfalls of Iceland
- 31 Women ecologists
- 321 Canadian Rockies
- 321 Films set on islands
- 323 Natural history of the Santa Monica Mountains
- 326 Rivers of Italy
- 327 Fish of the Atlantic Ocean
- 32 Archaeological discoveries in Turkey
- 32 Blackfoot people
- 32 Bodies of water of the Coral Sea
- 32 Caves of Germany
- 32 Coal mining
- 32 Colliers of the United States Navy
- 32 Coniacian Stage
- 32 Coral reefs of the Florida Keys
- 32 Cornish Killas
- 32 Earthquakes in India
- 32 Ecoregions of Canada
- 32 Former rivers
- 32 Fungi found in fairy rings
- 32 Geologic formations of South Africa
- 32 Granite domes of Yosemite National Park
- 32 History of mining
- 32 History of New Zealand
- 32 History of the Atlantic Ocean
- 32 Holy wells in England
- 32 Icebreakers of the Soviet Union
- 32 Illinois River
- 32 Inactive faults
- 32 Irrigation canals
- 32 Islands of Indonesia
- 32 Islands of Oceania
- 32 Izu Islands
- 32 Jurassic Germany
- 32 Landforms of Canterbury, New Zealand
- 32 Latin America
- 32 Localities of Central Highlands Council, Tasmania
- 32 McMurdo Dry Valleys geography stubs
- 32 Miocene Series of South America
- 32 Native grasses of the Great Plains region
- 32 Neogene Colombia
- 32 Neogene Peru
- 32 North York Moors
- 32 Nucleic acids
- 32 Oxfordian life
- 32 Paleontology in Germany
- 32 Paleontology in Spain
- 32 Peninsulas of Greenland
- 32 Politics of Europe
- 32 Possible impact craters on Earth
- 32 Reforestation
- 32 Rivers of Angola
- 32 Rivers of Myanmar
- 32 Rock formations
- 32 Sacramento Valley
- 32 Santa Clara River (California)
- 32 Shipwrecks of Lake Huron
- 32 Slope landforms
- 32 Spa towns in Austria
- 32 Spa towns in the Czech Republic
- 32 Stratigraphy
- 32 Strewn field (meteorite)
- 32 Triassic plants
- 32 Wasatch Cache National Forest
- 32 Willamette Valley
- 331 Limestone caves
- 33 21st century
- 332 Fish of the Pacific Ocean
- 333 Drought tolerant plants
- 337 Mountains under 1000 metres
- 33 ACF River Basin
- 33 Aegean islands
- 33 Alpine guides
- 33 Amazon biome
- 33 Apollo 17
- 33 Archipelagoes of Papua New Guinea
- 33 Aristolochia
- 33 Baltic amber
- 33 Botany Bay
- 33 Burdigalian life
- 33 Corrosion
- 33 Cretaceous impact craters
- 33 Ecoregions of Colombia
- 33 Evaporite
- 33 Fictional dinosaurs
- 33 Fossil trackways
- 33 Friasian
- 33 Geoglyphs
- 33 Geology of the Rocky Mountains
- 33 Glacier National Park (Canada)
- 33 Great Smoky Mountains National Park
- 33 Gulfs of the Pacific Ocean
- 33 Hydroxide minerals
- 33 Ice ages
- 33 Islands of Singapore
- 33 Islands of the Caspian Sea
- 33 Istria
- 33 Jurassic System of Asia
- 33 Karst
- 33 Lakes of Antarctica
- 33 Lakes of Iceland
- 33 LQ06 quadrangle
- 33 LQ09 quadrangle
- 33 Miocene first appearances
- 33 Mountain ranges of Papua New Guinea
- 33 Mountains of the Sierra Nevada (U S )
- 33 Mountains of the Sierra Nevada (U.S.)
- 33 Norfolk Broads
- 33 Otago Peninsula
- 33 Potawatomi
- 33 Prehistoric animals of Europe
- 33 Radio stations in Coahuila
- 33 Rivers of Hamburg
- 33 Sai Kung Peninsula
- 33 Sandstone buildings in India
- 33 Sorosilicates
- 33 Source rock formations
- 33 Submarine volcanoes
- 33 Tasiusaq Bay
- 33 Titanium minerals
- 33 Tributaries of Lake Ontario
- 346 International rivers of Europe
- 34 Anthelmintics
- 34 Beaches of Greece
- 34 Channel Islands geography stubs
- 34 Communities in the Lower Colorado River Valley
- 34 Conejo Valley
- 34 Depressions (geology)
- 34 Disko Bay
- 34 Dolomite formations
- 34 Dudley Peninsula
- 34 Ecological economics
- 34 Environment of the Mediterranean
- 34 Fauna of the Sahara
- 34 Flores Island (Indonesia)
- 34 Fracture mechanics
- 34 Geology of Mars
- 34 Gunnison National Forest
- 34 History of Corsica
- 34 Icebreakers of Russia
- 34 Indian Ocean
- 34 Islands of Iceland
- 34 Lakes of Lithuania
- 34 Lakes of Serbia
- 34 Maastrichtian Stage
- 34 Mine safety
- 34 Morro Bay
- 34 Mountains of Taiwan
- 34 Native American history of Wisconsin
- 34 Natural history of the Mexican Plateau
- 34 New Caledonia stubs
- 34 Northern Cordilleran Volcanic Province
- 34 Rivers of Georgia (country)
- 34 Rivers of Nigeria
- 34 Rivers of Zimbabwe
- 34 San Juan National Forest
- 34 Songs about oceans and seas
- 34 Sonoran Desert
- 34 Spa towns in Japan
- 34 Tectonics
- 34 Trees in mythology
- 34 Tundra ecoregions
- 34 Tunnels in the Alps
- 34 Victor Valley
- 35 Apex predators
- 35 Apostle Islands
- 35 Borealis quadrangle
- 35 Canadian Heritage Rivers
- 35 Cheyenne people
- 35 Chiltern Hills
- 35 Climate change and society
- 35 Conservation biology
- 35 Cratons
- 35 Dominican amber
- 35 Fossils of Serbia
- 35 Fossil taxa described in 2004
- 35 Gila River
- 35 History of the Canary Islands
- 35 Hotel spas
- 35 Hot springs
- 35 Iron meteorites
- 35 Krk
- 35 Lake Victoria
- 35 Landforms of Oregon
- 35 Mountains of Slovakia
- 35 Nitrogen cycle
- 35 Ordovician first appearances
- 35 Paleontology in California
- 35 Populated places on the Amazon
- 35 Port Huron, Michigan
- 35 Protected areas of the Colorado Desert
- 35 Quaternary South America
- 35 Rivers of the Apennines
- 35 Rogue River Siskiyou National Forest
- 35 Sequoia National Forest
- 35 Shipwrecks in the Indian Ocean
- 35 Southern Highlands (New South Wales)
- 35 Taiga and boreal forests
- 35 Tributaries of the Chesapeake Bay
- 35 Tropical and subtropical dry broadleaf forests
- 35 Upper Cretaceous Series of North America
- 35 Uummannaq Fjord
- 35 Volcanic groups
- 35 Wetlands of India
- 35 Wheeler Shale
- 36 Airliner accidents and incidents caused by ice
- 36 Anatolia
- 36 Antimicrobials
- 36 Atolls of the Federated States of Micronesia
- 36 Caribbean geologic formation stubs
- 36 Chagos Archipelago
- 36 Chemical oceanography
- 36 Cinder cones
- 36 Communities on the Niger River
- 36 Crow tribe
- 36 Doublet earthquakes
- 36 East River
- 36 Fellows of the Ecological Society of America
- 36 Flooded grasslands and savannas
- 36 Fossils of India
- 36 Fossils of Sweden
- 36 Geologic formations of Chile
- 36 Geomagnetism
- 36 Glacier National Park (U S )
- 36 Glacier National Park (U.S.)
- 36 Greenhouse gases
- 36 Guyots
- 36 Highest points of United States national parks
- 36 Hisingen
- 36 History of Malta
- 36 Individual diamonds
- 36 Kimmeridgian life
- 36 Landforms of Waikato
- 36 Lujanian
- 36 Montane ecology
- 36 Mountains of Bulgaria
- 36 Mountains of Ethiopia
- 36 Mountains of Myanmar
- 36 Mount Vesuvius
- 36 Native birds of the Canadian Prairies
- 36 Ohio River
- 36 Paleoclimatology
- 36 Paleozoic life of Manitoba
- 36 Petroglyphs
- 36 Plains tribes
- 36 Pliocene extinctions
- 36 Pomona Valley
- 36 Potomac River watershed
- 36 Reservoir rock formations
- 36 Rivers of Hungary
- 36 Santacrucian
- 36 Songs about rivers
- 36 Thrust faults
- 36 Thunder gods
- 36 Tithonian life
- 36 Triassic animal stubs
- 36 Tributaries of the Snake River
- 36 United States geologic formation stubs
- 36 Weirs
- 36 Wildlife conservation organizations
- 375 IMO numbers
- 376 Europe river stubs
- 376 Madagascar geography stubs
- 376 Rivers of Germany
- 378 International mountains of Europe
- 37 Antelope Valley
- 37 Appalachian Trail
- 37 Bird conservation
- 37 British Virgin Islands geography stubs
- 37 Cretaceous United States
- 37 Falster
- 37 Glacial landforms
- 37 Glaciers of Peru
- 37 Hawaii (island)
- 37 History of the Mediterranean
- 37 Holocene volcanism
- 37 Isla Margarita
- 37 Islands of the South China Sea
- 37 Islands of Tokyo
- 37 Lakes of Japan
- 37 Long Island in fiction
- 37 LQ18 quadrangle
- 37 McMurdo Dry Valleys
- 37 Minerals
- 37 Montehermosan
- 37 Mountain passes of Italy
- 37 Mountain ranges of Switzerland
- 37 Mountain ranges of the Colorado Desert
- 37 Mountains of Georgia (country)
- 37 Mountains of Indonesia
- 37 Mountains of Mexico
- 37 Mountains of the Harz
- 37 Ouachita National Forest
- 37 Oxfordian Stage
- 37 Paleogene stubs
- 37 Pliocene volcanism
- 37 Rivers of Malaysia
- 37 Ruby Mountains
- 37 Solnhofen fauna
- 37 Spas
- 37 Stone (material)
- 37 Sulfur heterocycles
- 37 Surface features of Mars
- 37 Toarcian Stage
- 37 Triassic Brazil
- 37 Volcanoes of Iceland
- 381 Monoclinic minerals
- 38 Atmospheric dynamics
- 38 Bathonian Stage
- 38 Bunchgrasses of Africa
- 38 Bunchgrasses of Australasia
- 38 Cyclades
- 38 Diffraction
- 38 Earthquakes in Mexico
- 38 Films set in prehistory
- 38 Fossils of Tanzania
- 38 Fossil taxa described in 1997
- 38 Fraser Canyon
- 38 GPS satellites
- 38 Great Lakes
- 38 Guayana Highlands
- 38 Harz
- 38 Hell Creek fauna
- 38 Ice hockey video games
- 38 Lefevre Peninsula
- 38 Miocene extinctions
- 38 Mountains of Albania
- 38 Mountains of Kings Canyon National Park
- 38 Mountains of the Western Ghats
- 38 Neogene stubs
- 38 Ozarks
- 38 Population ecology
- 38 Protected trees of South Africa
- 38 Radio stations in Sonora
- 38 Rivers of Nepal
- 38 Rivers of the Eifel
- 38 Sierra Pelona Ridge
- 38 Silurian animal stubs
- 38 Stonemasonry
- 38 Stone monuments and memorials
- 38 Stormwater management
- 38 Ypresian Stage
- 38 Zeolites
- 39 Antimony minerals
- 39 Apollo 11
- 39 Arsenic minerals
- 39 Atlantic Forest (biome)
- 39 Bass Strait
- 39 Capri, Campania
- 39 Carboniferous first appearances
- 39 Coal hulks
- 39 Earthquake clusters, swarms, and sequences
- 39 Earthquakes in Colombia
- 39 Fossiliferous stratigraphic units of Asia
- 39 Fossil taxa described in 1998
- 39 Geologic formations of Canada
- 39 Geologic formations of England
- 39 Geophysics
- 39 Highland Estates
- 39 Huayquerian
- 39 Lagoonal deposits
- 39 Land reclamation
- 39 Lava fields
- 39 Laventan
- 39 Mountains of Montenegro
- 39 Mountains of the Graian Alps
- 39 Natural arches
- 39 Nile
- 39 People from Singapore
- 39 Petroleum politics
- 39 Rivers of Slovakia
- 39 Rock shelters
- 39 Santa Susana Mountains
- 39 Seismic faults of California
- 39 Sierra National Forest
- 39 Suez Canal
- 39 Surveying instruments
- 39 Tidal islands of Scotland
- 402 Flora of the California desert regions
- 404 Eyre Peninsula
- 40 Amargosa Desert
- 40 Bay of Bengal
- 40 Cliffs of the United States
- 40 Coconino National Forest
- 40 Coronado National Forest
- 40 Crassulaceae
- 40 Cyclosilicates
- 40 Dinaric Alps
- 40 Ecoregions of Indonesia
- 40 Fauna of the U S Rio Grande Valleys
- 40 Fauna of the U.S. Rio Grande Valleys
- 40 Fossils of Australia
- 40 Geologic formations of Germany
- 40 Greenhouse gas emissions
- 40 Hauterivian Stage
- 40 Headlands of Greenland
- 40 Highland Park, Illinois
- 40 Jurassic China
- 40 Kuiper quadrangle
- 40 Lakes of the Philippines
- 40 Limestone formations of the United States
- 40 Metamorphic rocks
- 40 Mountain ranges of Greece
- 40 Mountains of the Jura
- 40 Ocean pollution
- 40 Ordovician southern paleotemperate deposits
- 40 Paleontology in Texas
- 40 Planetary geology
- 40 Sea and river goddesses
- 40 Spa towns in France
- 40 Topography
- 40 Tributaries of the Po (river)
- 40 Waterfalls of Japan
- 40 Watersheds of the United States
- 40 Women paleontologists
- 410 Natural history of the Mojave Desert
- 412 Natural history of the California Coast Ranges
- 418 Astrogeology stubs
- 41 Australian surveyors
- 41 Barossa Valley
- 41 Beaches of the Philippines
- 41 Burmese amber
- 41 Conservation dependent plants
- 41 Cretaceous stubs
- 41 Devonian extinctions
- 41 Dodecanese
- 41 Earthquakes in Italy
- 41 Flora of Michigan
- 41 Flora of the U S Rio Grande Valleys
- 41 Flora of the U.S. Rio Grande Valleys
- 41 Fossils of Venezuela
- 41 French paleontologists
- 41 Gondwana Rainforests of Australia
- 41 Gozo
- 41 Grasses of Oceania
- 41 Grasslands of the North American Great Plains
- 41 History of the Rocky Mountains
- 41 LQ28 quadrangle
- 41 Mediterranean forests, woodlands, and scrub
- 41 Mountains of Greece
- 41 Neogene Chile
- 41 North African campaign films
- 41 Paleolithic
- 41 Permian extinctions
- 41 Phosphorothioates
- 41 Pleistocene United States
- 41 Rivers of Madagascar
- 41 Rivers of Thailand
- 41 San Bernardino National Forest
- 41 Sea and river gods
- 41 Ships sunk as artificial reefs
- 41 Structure of the Earth
- 41 Tithonian Stage
- 41 Tongass National Forest
- 41 Trace fossils
- 41 Transit authorities with natural gas buses
- 41 Tributaries of Lake Huron
- 41 Valanginian Stage
- 41 VEI 7 volcanoes
- 41 Works about petroleum
- 41 Yangtze River
- 420 Natural history of the Transverse Ranges
- 424 Natural history of the Peninsular Ranges
- 428 Sandstone formations
- 42 Australasian ecoregions
- 42 Dune (franchise) media cover images
- 42 Ellesmere Island
- 42 Films shot in Lone Pine, California
- 42 Fossils of Georgia (U S state)
- 42 Fossils of Georgia (U.S. state)
- 42 Geochemistry
- 42 Gulf of Thailand
- 42 History of Sumatra
- 42 Honeycombs (geometry)
- 42 Indian River Lagoon
- 42 Islands of the Sea of Japan
- 42 Karst caves
- 42 Lower Colorado River Valley
- 42 Macau Peninsula
- 42 Mountaineering
- 42 Mountains of Liechtenstein
- 42 Nickel minerals
- 42 Populated places on the Mekong River
- 42 Tombolos
- 42 Turonian life
- 42 Volcanic landforms
- 436 Rivers of France
- 43 Antiparasitic agents
- 43 Barremian life
- 43 Berriasian Stage
- 43 Canada glacier stubs
- 43 Carnian life
- 43 Earthquake engineering
- 43 Earthquakes in Iran
- 43 Ecoregions of Europe
- 43 Hazardous air pollutants
- 43 Highland regiments
- 43 History of Europe
- 43 History of Tasmania
- 43 Lava tubes
- 43 Lesser Sunda Islands
- 43 Mountains of Turkey
- 43 Mountains of Yosemite National Park
- 43 Northern Limestone Alps
- 43 Paleobotanists
- 43 Paleozoic life of Yukon
- 43 Preservatives
- 43 Rivers of Pakistan
- 43 Santa Ynez Mountains
- 43 Silver minerals
- 43 Spa towns in Italy
- 43 Stone sculptures
- 43 White River National Forest
- 44 Animal migration
- 44 Asbestos
- 44 Bunchgrasses of Asia
- 44 Columbia Valley
- 44 Cretaceous Mexico
- 44 Fossil parks in the United States
- 44 Glacial lakes
- 44 History of Taiwan
- 44 Lists of islands by country
- 44 Localities of Meander Valley Council, Tasmania
- 44 LQ07 quadrangle
- 44 Massif Central
- 44 Mining equipment
- 44 Missouri River
- 44 Mojave National Preserve
- 44 Monongahela River
- 44 Montmartre
- 44 Mountains and hills of the Palatinate Forest
- 44 Mountains of the John Muir Wilderness
- 44 Native birds of the Plains Midwest (United States)
- 44 Petroleum stubs
- 44 Prehistoric animals of China
- 44 Pteridospermatophyta
- 44 Reef deposits
- 44 Shasta Trinity National Forest
- 44 Sierra Madre Oriental
- 44 Spa towns in Poland
- 44 Stratigraphy of British Columbia
- 44 Swaledale
- 44 Temperate coniferous forests
- 44 Tiered waterfalls
- 44 United Kingdom geologic formation stubs
- 44 Upper Cretaceous Series of Asia
- 44 Volcanic islands
- 44 Volcanoes of New Zealand
- 44 White River Fauna
- 456 MMSI Number
- 45 Africa stubs
- 45 Antarctica related lists
- 45 Fossils of Chile
- 45 Fossil taxa described in 2000
- 45 Greater Yellowstone Ecosystem
- 45 Hardstone carving
- 45 LQ02 quadrangle
- 45 LQ03 quadrangle
- 45 LQ29 quadrangle
- 45 Mountain ranges of the Eastern Carpathians
- 45 Mountain ranges of the Lower Colorado River Valley
- 45 Mountains of Cape Verde
- 45 Paleozoic life of British Columbia
- 45 People from Gotland
- 45 Rivers of Venezuela
- 45 Rocky Mountains
- 45 Sulfoxides
- 45 Taxa named by Robert Broom
- 45 Towns of the Southern Highlands (New South Wales)
- 45 Tributaries of the Yukon River
- 45 Wetlands
- 46 Antimalarial agents
- 46 Baltic Sea
- 46 Deschutes National Forest
- 46 Desert fruits
- 46 Ecology of the Appalachian Mountains
- 46 Fossiliferous stratigraphic units of Africa
- 46 Fossils of Mongolia
- 46 Fossil taxa described in 1994
- 46 Glens of Scotland
- 46 Impact event films
- 46 Islands of Thailand
- 46 Lake Eyre basin
- 46 LQ24 quadrangle
- 46 Mountains and hills of the Central Highlands
- 46 Mountains of the Western Carpathians
- 46 Nidderdale
- 46 Oilfield services companies
- 46 Organosulfur compounds
- 46 Paleogene Argentina
- 46 Paleontology in New Mexico
- 46 Salinas Valley
- 46 San Isabel National Forest
- 46 Snow or ice weather phenomena
- 46 Summiters of the Seven Summits
- 46 Topography of the ancient city of Rome
- 46 Turonian Stage
- 46 Tyrrhenian Sea
- 47 Adena culture
- 47 Conservation projects
- 47 Cowal
- 47 Dune (franchise) character images
- 47 Dune (franchise) location redirects
- 47 Ecoregions of India
- 47 Eocene extinctions
- 47 Geologic formations of Brazil
- 47 Great Plains
- 47 History of Madagascar
- 47 Land art
- 47 LQ10 quadrangle
- 47 Mangrove ecoregions
- 47 Mangroves
- 47 Murray River
- 47 Natural regions
- 47 Novels about dinosaurs
- 47 Paleontologist stubs
- 47 Proglacial lakes
- 47 Robson Valley
- 47 Tepuis of Venezuela
- 47 Water streams
- 482 Impact craters on the Moon
- 487 Cascade Range
- 487 Impact craters on Mars
- 48 Cambrian animal stubs
- 48 Canary Islands geography stubs
- 48 Chesapeake Bay watershed
- 48 Drilling technology
- 48 Ephemeral plants
- 48 Fossil taxa described in 2002
- 48 History of Africa
- 48 Ice trade
- 48 Industrial minerals
- 48 Islands of Fiji
- 48 Isle of Man geography stubs
- 48 Lists of mountains by prominence
- 48 LQ15 quadrangle
- 48 Manhattan in fiction
- 48 Mountains of Iceland
- 48 Phosphates
- 48 Populated places in the Colorado Desert
- 48 Rivers of Croatia
- 48 Rivers of Latvia
- 48 Ross Dependency glacier stubs
- 48 Seismology
- 48 Silurian extinctions
- 48 Sulfate mineral stubs
- 48 Transverse Ranges
- 48 Triassic System of Europe
- 494 Mountains of Peru
- 498 Mountains of Switzerland
- 499 Mountains of the Alps
- 49 Earthquakes in Japan
- 49 Ecology terminology
- 49 Golden Horn
- 49 Igneous petrology
- 49 Indus basin
- 49 Jurassic Argentina
- 49 Klamath Mountains
- 49 Miocene volcanism
- 49 Mountains of Poland
- 49 Nature conservation in the United States
- 49 Paleontology in the United States by state
- 49 Paleozoic life of Alberta
- 49 Phoenix metropolitan area
- 49 River Clyde
- 49 Rivers of Portugal
- 49 Rivers of the Black Forest
- 49 Salmon Challis National Forest
- 49 Santonian Stage
- 49 Ship canals
- 49 Svalbard glacier stubs
- 49 Tehachapi Mountains
- 49 Trans Mexican Volcanic Belt
- 49 Uranium(VI) minerals
- 50 21st century volcanic events
- 50 Aare basin
- 50 Adirondack High Peaks
- 50 Air pollution
- 50 Cretaceous England
- 50 Disinfectants
- 50 El Centro metropolitan area
- 50 Fictional characters with ice or cold abilities
- 50 Former disputed islands
- 50 Fossil taxa described in 1999
- 50 Geologic formations of China
- 50 Geologic formations of Colombia
- 50 German paleontologists
- 50 History of Greenland
- 50 Islands of the Maldives
- 50 Landforms of Lasithi
- 50 Limnology
- 50 Lower Cretaceous Series of Europe
- 50 LQ23 quadrangle
- 50 Mountains of Venezuela
- 50 Narragansett Bay
- 50 Novels set in prehistory
- 50 Paleozoic life of Nova Scotia
- 50 Professional Women's Hockey Players Association players
- 50 Rivers of Iran
- 50 Santa Ana Mountains
- 50 Stones
- 50 Water ice
- 51 Atacama Desert
- 51 Bellarine Peninsula
- 51 Biological oceanography
- 51 Countries in Asia
- 51 Ecological restoration
- 51 Fauna of the Chihuahuan Desert
- 51 Fossils of the Czech Republic
- 51 Fossil taxa described in 1995
- 51 Fruit tree stubs
- 51 Highest points of U S states
- 51 Highest points of U.S. states
- 51 Kangaroo Island
- 51 Maotianshan shales fossils
- 51 Mountain ranges of Romania
- 51 Mountains of Greenland
- 51 Pisgah National Forest
- 51 Seismic faults of Colombia
- 51 Willamette National Forest
- 51 Zinc minerals
- 52 Ecoregions of Russia
- 52 Fauna of the Great Basin
- 52 Fleurieu Peninsula
- 52 Fossil taxa described in 2016
- 52 Landslide dammed lakes
- 52 Mountain ranges of the Czech Republic
- 52 Mountains of the Ore Mountains
- 52 National parks of Madagascar
- 52 Nesosilicates
- 52 Sierra Madre Occidental
- 52 Temperate grasslands, savannas, and shrublands
- 52 Tributaries of the Saint Lawrence River
- 53 Archipelagoes of Indonesia
- 53 Artificial lakes
- 53 Caves containing pictograms in India
- 53 Clematis
- 53 Coal formations
- 53 Crystallographers
- 53 Ecosystems
- 53 Eocene first appearances
- 53 Fossils of Peru
- 53 Highest points of English counties
- 53 Igneous rocks
- 53 International lakes of Europe
- 53 Lakes of Chile
- 53 Lakes of the Sierra Nevada (U S )
- 53 Lakes of the Sierra Nevada (U.S.)
- 53 Lower Cretaceous Series of Asia
- 53 Neanderthals in fiction
- 53 Oil field stubs
- 53 Paleocene first appearances
- 53 Paleozoic life of New Brunswick
- 53 Small Island Developing States
- 53 Video games set in prehistory
- 53 Water conservation
- 53 Yoho National Park
- 54 Alaska glacier stubs
- 54 Anguilla stubs
- 54 Banff National Park
- 54 Bunchgrasses of Europe
- 54 Castles in Turkey
- 54 Chondrite meteorites
- 54 Climate change denial
- 54 Countries in Europe
- 54 Crystals
- 54 Effects of climate change
- 54 Feathered dinosaurs
- 54 Fossils of Mexico
- 54 Glaciers of Alaska
- 54 Holocene Asia
- 54 Inosilicates
- 54 Iron(III) minerals
- 54 Islands on the Great Barrier Reef
- 54 Monterey Bay
- 54 Mountain passes of South Africa
- 54 Mountain ranges of Poland
- 54 Mountains of Iran
- 54 Native element minerals
- 54 Nature conservation organizations
- 54 Paleozoic life of Newfoundland and Labrador
- 54 Pleistocene volcanism
- 54 Rivers of Bulgaria
- 54 Rivers of Romania
- 54 Sulfates
- 54 Thanet
- 55 Alluvial deposits
- 55 Data deficient plants
- 55 Earthquakes in Indonesia
- 55 Emissions reduction
- 55 Fjord stubs
- 55 Fossils of Bolivia
- 55 Fossil taxa described in 2001
- 55 Lists of mountains by elevation
- 55 Lower Cretaceous Series of South America
- 55 Rivers of the Democratic Republic of the Congo
- 55 Sewerage
- 55 Tributaries of Lake Erie
- 56 Berkeley Hills
- 56 Biosphere reserves of the United States
- 56 California Coast Ranges
- 56 Coast guards
- 56 Conservation in the United Kingdom
- 56 Ecoregions of China
- 56 Fictional islands
- 56 Fossil taxa described in 2018
- 56 Habitats
- 56 Islands of the Falkland Islands
- 56 Marine biodiversity of South Africa
- 56 Mountain ranges of the Sonoran Desert
- 56 Porcelain
- 56 Rivers of Belarus
- 56 Sandstone buildings in Australia
- 56 Seamounts of the Atlantic Ocean
- 57 Fossil taxa described in 2008
- 57 German mineralogists
- 57 Halide minerals
- 57 Historical geology
- 57 Landforms of Blagoevgrad Province
- 57 LQ05 quadrangle
- 57 North America mountain stubs
- 57 Paleobotany stubs
- 57 Petroleum production
- 57 Protected areas of the Sierra Nevada (U S )
- 57 Protected areas of the Sierra Nevada (U.S.)
- 57 Topography stubs
- 57 Volcanic fields
- 58 American geophysicists
- 58 Clay tablets
- 58 Denmark island stubs
- 58 Fauna of the Colorado Desert
- 58 Fossils of the United Kingdom
- 58 Fossil taxa described in 2003
- 58 Gelasian taxonomic families
- 58 Geological type localities
- 58 Gold
- 58 Imperial Valley
- 58 Iron minerals
- 58 Islands of the Gulf of California
- 58 Manganese(II) minerals
- 58 Mountains and hills of the Swabian Jura
- 58 Mountains on the Moon
- 58 Ooliferous formations
- 58 Sulfosalt minerals
- 58 Upper Cretaceous Series of South America
- 58 Volcanic rocks
- 58 Water supply stubs
- 59 20th century volcanic events
- 59 Antiprotozoal agents
- 59 Cenomanian life
- 59 Forest ecology
- 59 Gulf of Carpentaria
- 59 Hot springs of Japan
- 59 Islands of the Solomon Islands
- 59 Los Padres National Forest
- 59 LQ14 quadrangle
- 59 Maria on the Moon
- 59 Montane grasslands and shrublands
- 59 Open marine deposits
- 59 Owens Valley
- 59 Prehistoric life of Europe
- 59 Rivers of Papua New Guinea
- 59 Simi Hills
- 59 Tributaries of San Francisco Bay
- 60 20th century
- 60 Cinder cones of the United States
- 60 Columbia River
- 60 Disputed islands
- 60 Ecoregion stubs
- 60 Geologic formations of Australia
- 60 Lakes of China
- 60 Lists of mountains of the United States
- 60 Mountain lakes
- 60 Mountain ranges of Russia
- 60 Paper
- 60 Plunge waterfalls
- 60 Populated places on the Inn (river)
- 60 Quebec populated places on the Saint Lawrence River
- 60 Rivers of the Sierra Nevada in California
- 60 Rivers of the Sierra Nevada (U S )
- 60 Rivers of the Sierra Nevada (U.S.)
- 60 Shipwrecks of Lake Michigan
- 60 Tay catchment
- 60 Triassic Argentina
- 60 Yixian fauna
- 61 Aptian life
- 61 Bays of New Zealand
- 61 Campanian life
- 61 Countries in Africa
- 61 Curling logos
- 61 Ecoregions of Brazil
- 61 Fossiliferous stratigraphic units of North America
- 61 Fossil taxa described in 2006
- 61 Fossil taxa described in 2007
- 61 Fossil taxa described in 2020
- 61 Glaciers of South Georgia
- 61 Greenland fjord stubs
- 61 Jurassic England
- 61 Lakes of Bosnia and Herzegovina
- 61 Limestone churches in Malta
- 61 Megalithic monuments
- 61 Metallurgical processes
- 61 Phosphate mineral stubs
- 61 Rivers of Greece
- 61 Rivers of Turkey
- 61 Terracotta
- 62 American rock climbers
- 62 Birds of the Americas
- 62 Fossiliferous stratigraphic units of Europe
- 62 Fossil museums
- 62 Geology of the Pacific Ocean
- 62 Islands of the Sea of Okhotsk
- 62 Lake Tahoe
- 62 LQ26 quadrangle
- 62 Marble sculptures
- 62 Paleontology in Utah
- 62 Peninsular Ranges
- 62 Trees of the Great Lakes region (North America)
- 63 Aerospace engineering
- 63 Aizoaceae
- 63 Ecoregions of Mexico
- 63 Fossil taxa described in 2005
- 63 LQ22 quadrangle
- 63 Mineralogy
- 63 Paleontology in Colorado
- 63 Petroleum company stubs
- 63 Phyllosilicates
- 63 Puget Sound geography stubs
- 63 Rivers of Finland
- 63 Stratovolcanoes
- 63 Subantarctic island geography stubs
- 63 Sulfonic acids
- 63 Vale of White Horse
- 63 Wharfedale
- 64 Albian life
- 64 Anisian life
- 64 Barremian Stage
- 64 Clay court tennis tournaments
- 64 Earthquakes in Turkey
- 64 Fish of the Great Lakes
- 64 Ice hockey stubs
- 64 LQ04 quadrangle
- 64 LQ11 quadrangle
- 64 LQ27 quadrangle
- 64 LQ30 quadrangle
- 64 Metallurgy
- 64 Mountains and hills of the Black Forest
- 64 Neolithic
- 64 Rivers of Bosnia and Herzegovina
- 64 San Fernando Valley
- 64 Sulfide mineral stubs
- 64 Taxa named by Othniel Charles Marsh
- 65 Cambrian first appearances
- 65 Cenomanian Stage
- 65 Coats of arms with mountains
- 65 Colorado River
- 65 Far North Queensland
- 65 International mountains of South America
- 65 Meteorite falls
- 65 Mountains of Bosnia and Herzegovina
- 65 New Zealand stubs
- 65 Papua New Guinea island stubs
- 65 Parasitic fungi
- 65 Populated places on the Dniester
- 65 Rivers of Bangladesh
- 65 San Gabriel Valley
- 65 Silurian first appearances
- 65 Subantarctic island glacier stubs
- 66 Angeles National Forest
- 66 Arsenate minerals
- 66 Central Uplands
- 66 Coney Island
- 66 Death Valley National Park
- 66 History of the Sierra Nevada (U S )
- 66 History of the Sierra Nevada (U.S.)
- 66 Mare Imbrium
- 66 Monongahela National Forest
- 66 Mountain ranges of Slovakia
- 66 Organophosphate insecticides
- 66 Paleontology in Montana
- 66 Phosphate esters
- 66 Potassium minerals
- 66 Rivers of London
- 66 Rivers of Taiwan
- 67 Archaeological museums in Turkey
- 67 Bodies of water
- 67 Dinosaur museums in the United States
- 67 History of the Mojave Desert region
- 67 Mountain ranges of the Western Carpathians
- 67 Passiflora
- 68 Ancient Roman buildings and structures in Rome
- 68 Fossil taxa described in 2017
- 68 Glaciers of Greenland
- 68 Global Positioning System
- 68 Grasses of South America
- 68 Islands of Croatia
- 68 LQ01 quadrangle
- 68 Mornington Peninsula
- 68 Mountains of South Korea
- 68 Oxide mineral stubs
- 68 South America river stubs
- 69 Algonquian peoples
- 69 Birds of the U S Rio Grande Valleys
- 69 Birds of the U.S. Rio Grande Valleys
- 69 Blizzards in the United States
- 69 Crops originating from the Americas
- 69 Hexagonal minerals
- 69 International rivers of South America
- 69 Islands of the Bahamas
- 69 Islands of Vanuatu
- 69 Island stubs
- 69 Paleontology in Wyoming
- 69 Rivers of Serbia
- 69 Tropical and subtropical grasslands, savannas, and shrublands
- 70 Agave
- 70 Atmospheric optical phenomena
- 70 Cretaceous Colombia
- 70 Erosion landforms
- 70 Glaciology stubs
- 70 Great Australian Bight
- 70 Mountain ranges of Italy
- 70 Populated places on the Rhine
- 70 Susquehanna Valley
- 70 Tuareg
- 70 Zion National Park
- 7 12th century BC
- 7 13th century earthquakes
- 7 18th century
- 7 1927 earthquakes
- 7 1943 earthquakes
- 7 1948 earthquakes
- 7 1953 earthquakes
- 7 1957 earthquakes
- 7 1964 earthquakes
- 7 1966 earthquakes
- 7 1969 earthquakes
- 7 1981 earthquakes
- 7 1985 earthquakes
- 7 1989 earthquakes
- 7 1996 earthquakes
- 71 Climate activists
- 71 Ecology stubs
- 71 ESO objects
- 71 Flora of the Great Plains (North America)
- 71 Fossil taxa described in 2015
- 71 Fossil taxa described in 2019
- 71 Gulf St Vincent
- 71 Island restoration
- 71 Olympic Mountains
- 71 Shipwrecks of Lake Superior
- 72 Carboniferous southern paleotropical deposits
- 72 Coachella Valley
- 72 Cross symbols
- 72 Environmental conservation
- 72 Hawkesbury River
- 72 Lakes of Turkey
- 72 Lists of rivers by country
- 72 Neogene Argentina
- 72 New Forest
- 72 Nile Delta
- 72 Stratigraphy of Alberta
- 73 Antifungals
- 73 Cascade waterfalls
- 73 Central Highlands (Tasmania)
- 73 Economic geology
- 73 Engadin
- 73 Fauna of the Great Lakes region (North America)
- 73 Lakes of Poland
- 73 Pesticides
- 7 3rd century BC
- 73 Rivers of Belgium
- 73 Shale formations of the United States
- 73 Sulfide minerals
- 73 Tributaries of Lake Superior
- 74 Fossils of Morocco
- 74 Gold objects
- 74 History of South America
- 74 Sulfides
- 74 Tectonic plates
- 75 Birds of the Caatinga
- 75 Coral reefs
- 75 Flora of the Caucasus
- 75 Great Rift Valley
- 75 Islands of Papua New Guinea
- 75 Mendip Hills
- 75 Metalworking
- 75 Norway fjord stubs
- 75 Rivers of Peru
- 75 Santa Lucia Range
- 76 Ethiopian Highlands
- 76 Fluvial landforms
- 76 Highlands and Islands of Scotland
- 76 Lithics
- 76 Marl formations
- 76 Mountains of Argentina
- 76 Nautical fiction
- 76 Rivers of the Netherlands
- 76 Tributaries of Lake Michigan
- 76 Victorian Alps
- 76 Vulnerable plants
- 77 Chattahoochee Oconee National Forest
- 77 Fynbos
- 77 International straits
- 77 Orkney geography stubs
- 77 Santa Cruz Mountains
- 77 Shipwrecks in rivers
- 77 Thiols
- 78 Ediacaran biota
- 78 Inyo National Forest
- 78 LQ21 quadrangle
- 78 Mountains and hills of the Southern Highlands
- 78 Paleontology in Argentina
- 78 Queen Maud Land glacier stubs
- 78 Rivers of the Alps
- 78 Saint Elias Mountains
- 7 8th millennium BC establishments
- 78 Video games set on islands
- 78 Volcanoes of British Columbia
- 78 Volcanology
- 79 Afromontane flora
- 79 Cascade Volcanoes
- 79 Fellows of the American Geophysical Union
- 79 Habitat
- 79 Iron(II) minerals
- 79 Lava domes
- 79 LQ19 quadrangle
- 79 Mountains and hills of the Czech Republic
- 79 North America river stubs
- 79 Ranges of the Rocky Mountains
- 79 Sierra Nevada (U S )
- 79 Sierra Nevada (U.S.)
- 79 Thames drainage basin
- 79 Wensleydale
- 7 Aerospace industry in the United Kingdom
- 7 African geologic formation stubs
- 7 Agardhfjellet Formation
- 7 Ahr
- 7 Airliner accidents and incidents caused by lightning strikes
- 7 Air pollution by region
- 7 Alderney
- 7 Amaknak Island
- 7 Anishinaabe culture
- 7 Anzhu Islands
- 7 Apalachicola National Forest
- 7 Apollo program lunar sample displays
- 7 Apostle Islands National Lakeshore
- 7 Archaea stubs
- 7 Archaeological sites in Montana
- 7 Archaeology of Turkey
- 7 Archean Africa
- 7 Archipelagoes of Brazil
- 7 Archipelagoes of the Caribbean Sea
- 7 Areas of Outstanding Natural Beauty in Northern Ireland
- 7 Arkansas River
- 7 Artificial lakes of Australia
- 7 Atolls of Papua New Guinea
- 7 Austral Islands
- 7 Badlands
- 7 Baffin Bay
- 7 Bald Eagle Valley
- 7 Basins
- 7 Batavia (ship)
- 7 Batholiths of North America
- 7 Bay of Wismar
- 7 Bays of Antigua and Barbuda
- 7 Bays of Lake Michigan
- 7 Bays of Norway
- 7 Bays of the Arctic Ocean
- 7 Beaches of Croatia
- 7 Beaches of Montenegro
- 7 Beaufort Sea
- 7 Belleville, Ontario
- 7 Bimetal
- 7 Biodegradation
- 7 Biogeochemists
- 7 Biogeographers
- 7 Bituminous sands
- 7 Blennerhassett Island
- 7 Bodies of water of Cuba
- 7 Bodies of water of Djibouti
- 7 Books about petroleum politics
- 7 Borkum
- 7 Brackish water organisms
- 7 Braided rivers in France
- 7 British mineralogists
- 7 Buffalo, New York
- 7 Buildings and structures in Aden
- 7 Buildings and structures in Jalisco
- 7 Burgas Lakes
- 7 Cambridge Gulf
- 7 Canal museums
- 7 Canary Islands related lists
- 7 Canyons and gorges of Africa
- 7 Carboniferous England
- 7 Caribbean Sea
- 7 Cat Island, Bahamas
- 7 Caves of Azerbaijan
- 7 Caves of Hungary
- 7 Caves of Nepal
- 7 Caves of Switzerland
- 7 Caves of Taiwan
- 7 Celtic Sea
- 7 Chari River
- 7 Chicago
- 7 Chronicles of Ancient Darkness
- 7 Cliff formers
- 7 Cliffs of Canada
- 7 Climate change controversies
- 7 Climate zones
- 7 Coal mining law
- 7 Coastal basins of the North Sea in Germany
- 7 Cobourg Peninsula
- 7 Commander Islands
- 7 Comoros related lists
- 7 Conglomerates (geology)
- 7 Continental shelves
- 7 Cortes Island
- 7 Crater Lake
- 7 Cretaceous Kazakhstan
- 7 Cretaceous United Kingdom
- 7 Croatan National Forest
- 7 Crow people
- 7 Crystal systems
- 7 Cyclic nucleotides
- 7 Cyprus related lists
- 7 Dams on the James River
- 7 Deep ecology
- 7 Deserts of Arizona
- 7 Deserts of Libya
- 7 Deserts of Nevada
- 7 Deserts of Utah
- 7 Devonian Canada
- 7 Devonian System of South America
- 7 Dhegiha Siouan peoples
- 7 Diamond industry in India
- 7 Diamond mining companies
- 7 Diamond simulants
- 7 Distributaries
- 7 Dolomite (rock)
- 7 Dominica related lists
- 7 Dominion of Newfoundland
- 7 Donets basin
- 7 Dune (franchise) species and races
- 7 Dunes of Russia
- 7 Early Triassic fish
- 7 Earthquakes in Algeria
- 7 Earthquakes in Portugal
- 7 Earthquakes in Spain
- 7 Earthquakes in the United Kingdom
- 7 Earthquakes in Ukraine
- 7 Earth's Children
- 7 Eastern Arc forests
- 7 East Humboldt Range
- 7 Economy of South America
- 7 Ecoregions of Belize
- 7 Ecoregions of Bulgaria
- 7 Ecoregions of Eritrea
- 7 Ecoregions of Greece
- 7 Ecoregions of Ivory Coast
- 7 Ecoregions of Libya
- 7 Ecoregions of Mali
- 7 Ecoregions of Niger
- 7 Ecoregions of South Sudan
- 7 Ecoregions of the Central African Republic
- 7 Ecoregions of Turkmenistan
- 7 Ecoregions of Zimbabwe
- 7 Ediacaran
- 7 Education in New Zealand
- 7 Emsian Stage
- 7 Environmental isotopes
- 7 Environmental volunteering
- 7 Eocene
- 7 Estuaries of Spain
- 7 Etosha National Park
- 7 Extant Cenozoic first appearances
- 7 Fauna of the Caatinga
- 7 Fauna of Western Sahara
- 7 Fehmarn
- 7 Fennoscandia
- 7 Fernando de Noronha
- 7 Fictional miners
- 7 Fishing communities
- 7 Flood geology
- 7 Floristic provinces
- 7 Fly River
- 7 Forestier Peninsula
- 7 Fossil parks in Australia
- 7 Fossil parks in Canada
- 7 Fossil parks in India
- 7 Fossils of British Columbia
- 7 Fossils of El Salvador
- 7 Fossils of Guatemala
- 7 Fossils of Kyrgyzstan
- 7 Fossils of Latvia
- 7 Fossils of North Carolina
- 7 Fossils of South Korea
- 7 Fossils of Tennessee
- 7 Fossils of Vietnam
- 7 Fossil taxa described in 1827
- 7 Fossil taxa described in 1855
- 7 Fossil taxa described in 1898
- 7 Fossil taxa described in 1906
- 7 Fossil taxa described in 1916
- 7 Fossil taxa described in 1943
- 7 Fossil taxa described in 1953
- 7 Franconian Forest
- 7 Frasnian extinctions
- 7 French glaciologists
- 7 Froan
- 7 Fusible alloys
- 7 Gemological laboratories
- 7 Geodesy stubs
- 7 Geodetic satellites
- 7 Geography of Bermuda
- 7 Geography of Lord Howe Island
- 7 Geography of New Zealand
- 7 Geography of Shetland
- 7 Geography of Singapore
- 7 Geography of Staten Island
- 7 Geography of Taiwan
- 7 Geography of Vancouver Island
- 7 Geologic formations of Costa Rica
- 7 Geologic formations of Kyrgyzstan
- 7 Geologic formations of Ontario
- 7 Geologic formations of Portugal
- 7 Geologic formations of Tajikistan
- 7 Geologic formations of Thailand
- 7 Geologic formations of Uzbekistan
- 7 Geologic groups of Asia
- 7 Geomagnetic storms
- 7 Geomicrobiology
- 7 Geosynthetics
- 7 Glacial lakes of India
- 7 Glaciers of Chile
- 7 Glaciers of Italy
- 7 Glaciers of McMurdo Dry Valleys
- 7 Godavari River
- 7 Gold in India
- 7 Granite formations
- 7 Groote Eylandt
- 7 Guadiana
- 7 Guanling Formation
- 7 Gulf Islands
- 7 Gulf of Mexico oil fields of the United States
- 7 Halophiles
- 7 Hasle Formation
- 7 Hauterivian life
- 7 Headlands of Chile
- 7 Headlands of Greece
- 7 Headlands of New Zealand
- 7 Headlands of Taiwan
- 7 Helmand River
- 7 Herm
- 7 Hidalgo (state)
- 7 Highest points of French national parks
- 7 High temperature superconductors
- 7 Hill and mountain resorts
- 7 Hills of Antarctica
- 7 Hills of Finland
- 7 Hills of France
- 7 History of Barbados
- 7 History of New Guinea
- 7 History of Nuevo León
- 7 History of Saint Helena
- 7 History of Saint Pierre and Miquelon
- 7 History of the Caspian Sea
- 7 History of the Channel Islands
- 7 History of the Marshall Islands
- 7 History of the Samoan Islands
- 7 Ho Chunk
- 7 Homerian
- 7 Humber drainage basin
- 7 Ice piedmonts of Graham Land
- 7 Ice roads
- 7 Imbros
- 7 Impact craters on Uranus' moons
- 7 Impact events in fiction
- 7 Impact event television series
- 7 Inagua
- 7 Indigenous peoples of the Americas
- 7 Individual emeralds
- 7 Inland waterway authorities
- 7 Inlets of Australia
- 7 Institutions of Petroleum in India
- 7 Intermittent lakes
- 7 International Skating Union
- 7 International Union for Conservation of Nature
- 7 Inussulik Bay
- 7 Invasive species
- 7 Irish Sea
- 7 Isar basin
- 7 Isauria
- 7 Islands of Albania
- 7 Islands of Finland
- 7 Islands of Jamaica
- 7 Islands of Namibia
- 7 Islands of Shanghai
- 7 Islands of the Arabian Sea
- 7 Islands of Ukraine
- 7 Islands of Vladivostok
- 7 Ithaca
- 7 Jamaica related lists
- 7 Jewellery companies of India
- 7 Jurassic Madagascar
- 7 Jurassic Mexico
- 7 Jurassic Park
- 7 Jurassic United States
- 7 Karst formation of Bosnia and Herzegovina
- 7 Karst formations of Croatia
- 7 Kaziranga National Park
- 7 King George Island (South Shetland Islands)
- 7 Kish Island
- 7 Kungurian
- 7 Kunlun Mountains
- 7 Kunstgraben
- 7 Kythira
- 7 Labrador Sea
- 7 Lagoons
- 7 Lagoons of Brazil
- 7 Lagoons of the United States
- 7 Lagoons of Turkey
- 7 Lake Kariba
- 7 Lake Maracaibo
- 7 Lake of the Ozarks
- 7 Lakes of Burkina Faso
- 7 Lakes of Indonesia
- 7 Lakes of London
- 7 Lakes of Uzbekistan
- 7 Lake Toba
- 7 Landforms of Agusan del Sur
- 7 Landforms of Albay
- 7 Landforms of Ardennes (department)
- 7 Landforms of Asturias
- 7 Landforms of Beijing
- 7 Landforms of British Columbia
- 7 Landforms of Castile and León
- 7 Landforms of Chubut Province
- 7 Landforms of Colorado
- 7 Landforms of Drama (regional unit)
- 7 Landforms of East Kalimantan
- 7 Landforms of Egypt
- 7 Landforms of Evrytania
- 7 Landforms of Gunma Prefecture
- 7 Landforms of Hatay Province
- 7 Landforms of Hauts de France
- 7 Landforms of Hebei
- 7 Landforms of Heilongjiang
- 7 Landforms of Henan
- 7 Landforms of Hesse
- 7 Landforms of Hsinchu County
- 7 Landforms of Ilocos Sur
- 7 Landforms of Iloilo
- 7 Landforms of Jakarta
- 7 Landforms of Jerusalem District
- 7 Landforms of Kansas
- 7 Landforms of Kardzhali Province
- 7 Landforms of Kazakhstan
- 7 Landforms of Keelung
- 7 Landforms of Kenya
- 7 Landforms of Kurdistan Province
- 7 Landforms of Larissa (regional unit)
- 7 Landforms of Lower Austria
- 7 Landforms of Lower Silesian Voivodeship
- 7 Landforms of Maguindanao
- 7 Landforms of Mali
- 7 Landforms of Mato Grosso
- 7 Landforms of Mie Prefecture
- 7 Landforms of Misamis Oriental
- 7 Landforms of Miyagi Prefecture
- 7 Landforms of Montana Province
- 7 Landforms of Mykonos
- 7 Landforms of Negros Oriental
- 7 Landforms of Nevada
- 7 Landforms of Nord (French department)
- 7 Landforms of Northern District (Israel)
- 7 Landforms of North Khorasan Province
- 7 Landforms of Nova Scotia
- 7 Landforms of Nuristan Province
- 7 Landforms of O'Higgins Region
- 7 Landforms of Paktia Province
- 7 Landforms of Pernik Province
- 7 Landforms of Pieria (regional unit)
- 7 Landforms of Pleven Province
- 7 Landforms of Podkarpackie Voivodeship
- 7 Landforms of Pomeranian Voivodeship
- 7 Landforms of Salta Province
- 7 Landforms of Selangor
- 7 Landforms of Shandong
- 7 Landforms of Shumen Province
- 7 Landforms of Sistan and Baluchestan Province
- 7 Landforms of South Carolina
- 7 Landforms of Southeast Sulawesi
- 7 Landforms of Świętokrzyskie Voivodeship
- 7 Landforms of Tanzania
- 7 Landforms of Taranaki
- 7 Landforms of the canton of St Gallen
- 7 Landforms of the canton of St. Gallen
- 7 Landforms of the Federation of Bosnia and Herzegovina
- 7 Landforms of the North Aegean
- 7 Landforms of Tochigi Prefecture
- 7 Landforms of Veliko Tarnovo Province
- 7 Landforms of Vratsa Province
- 7 Landforms of West Nusa Tenggara
- 7 Landforms of Wisconsin
- 7 Landforms of Yunlin County
- 7 Lesser Cyclades
- 7 Limestone formations of the United Kingdom
- 7 Limestone sculptures in Kentucky
- 7 Lincoln National Forest
- 7 Lists of canals by country
- 7 Lists of impact craters on Earth
- 7 Lists of lakes of India
- 7 Lists of landforms of Puerto Rico
- 7 Lists of landforms of Switzerland
- 7 Lists of longest rivers
- 7 Lists of mountain passes
- 7 Lists of oil and natural gas fields
- 7 Lists of rivers
- 7 Lists of rivers of the United Kingdom
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- 7 Lists of waterfalls by country
- 7 Lithophones
- 7 Maars of the Philippines
- 7 Mahanadi River
- 7 Mammoth Cave National Park
- 7 Mare Fecunditatis
- 7 Medieval tsunamis
- 7 Mercury minerals
- 7 Merrimack River
- 7 Mersey River (Tasmania)
- 7 Mesolithic
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- 7 Meteorite classes
- 7 Meteorites found in Mexico
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- 7 Mining folklore
- 7 Mining in Colombia
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- 7 Miocene
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- 7 Monocacy River
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- 7 Monumental columns in Rome
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- 7 Mountain ranges
- 7 Mountain ranges of Albania
- 7 Mountain ranges of Canada
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- 7 Mountains of Vanuatu
- 7 Mountains on Io (moon)
- 7 Mountains on Venus
- 7 Namibian savanna woodlands
- 7 National Register of Historic Places in Capitol Reef National Park
- 7 National Register of Historic Places in Colorado National Monument
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- 7 Natural arches of France
- 7 Natural gas by country
- 7 Natural gas fields in the United Kingdom
- 7 Natural history of Durango
- 7 Natural history of Sinaloa
- 7 Natural history of the Americas
- 7 Nature conservation in Brazil
- 7 Nature conservation in Chile
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- 7 Nature conservation in Uganda
- 7 Neoproterozoic orogenies
- 7 Niagara Falls, New York
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- 7 Oil field disputes
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- 7 Oil shale technology
- 7 Ojo Alamo Formation
- 7 Oligocene volcanoes
- 7 Onega River basin
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- 7 Oshawa
- 7 Outlines of continents
- 7 Owens River
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- 7 Paleocene plants
- 7 Paleocene Series of North America
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- 7 Paleogene Chile
- 7 Paleogene Trinidad and Tobago
- 7 Paleontological sites of New Zealand
- 7 Paleontology in Connecticut
- 7 Paleontology in Kyrgyzstan
- 7 Paleontology in Lesotho
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- 7 Paleontology in New Zealand
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- 7 Paleontology in Norway
- 7 Paleontology in Peru
- 7 Paleontology in Poland
- 7 Paleontology in South Australia
- 7 Paleontology in Thailand
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- 7 Paleontology in Victoria
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- 7 Paleoproterozoic orogenies
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- 7 Paleozoology
- 7 Palomar Mountains
- 7 Parabens
- 7 Patapsco River
- 7 Peaks dedicated to Michael (archangel)
- 7 Pellucidar novels by Edgar Rice Burroughs
- 7 Peninsulas of France
- 7 People from Jeju Province
- 7 People from Penghu County
- 7 People from Phuket Province
- 7 Permian System of South America
- 7 Personifications of weather
- 7 Petroglyphs in South America
- 7 Petroleum in Brazil
- 7 Phosphorofluoridates
- 7 Plains of China
- 7 Plains of Slovakia
- 7 Plains Woodland period
- 7 Planation surfaces
- 7 Plateaus of Brazil
- 7 Pleistocene paleontological sites of South America
- 7 Plesiosaurs in fiction
- 7 Pliocene North America
- 7 Podkarpackie Voivodeship
- 7 Politics of Oceania
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- 7 Populated places in ancient Lycaonia
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- 7 Potential impact events caused by near Earth objects
- 7 Precambrian fossils
- 7 Prehistoric animals of Africa
- 7 Prehistoric plants
- 7 Presidents of Kenya
- 7 Primeval (TV series)
- 7 Pull apart basins
- 7 Quarrying
- 7 Quechan
- 7 Radiometric dating
- 7 Radio stations in Nayarit
- 7 Rancholabrean
- 7 Rangeomorpha
- 7 Rankine Lecturers
- 7 Rapid City, South Dakota
- 7 Raritan River
- 7 Reefs of India
- 7 Reefs of Vietnam
- 7 Regular tessellations
- 7 Republic of Hawaii
- 7 Rio Negro (Amazon)
- 7 River regulation in Australia
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- 7 Rivers of Egypt
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- 7 River Tyne
- 7 Robinson Crusoe Island
- 7 Rock formations of Australia
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- 7 Rocksalt group
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- 7 Rur basin
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- 7 Save River (Africa)
- 7 Scarps on Mercury
- 7 Schools of mines
- 7 Sea of Azov
- 7 Sedimentary basins of Asia
- 7 Seismic faults
- 7 Seismology stubs
- 7 Selandian Stage
- 7 Shipwrecks in the Southern Ocean
- 7 Shipwrecks of the River Thames
- 7 Show caves in Slovenia
- 7 Siberian Tiger Re population Project
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- 7 Silver mining companies
- 7 Sinaloa
- 7 Slocan Valley
- 7 Songs about Hawaii
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- 7 Spa towns in Turkey
- 7 Springs of the Philippines
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- 7 Staten Island in fiction
- 7 Steamboats of the Snake River
- 7 St Francois Mountains
- 7 St. Francois Mountains
- 7 Strait of Dover
- 7 Strait of Juan de Fuca
- 7 Straits of Messina
- 7 Stratigraphy of the Northwest Territories
- 7 Structural basins
- 7 Submerged waterfalls
- 7 Sulfonyl halides
- 7 Sulfur oxides
- 7 Surface features of bodies of the Solar System
- 7 Surface features of Charon
- 7 Surface features of Enceladus
- 7 Surface features of Iapetus (moon)
- 7 Surface features of Tethys (moon)
- 7 Surveyors
- 7 Svalbard in fiction
- 7 Swamps
- 7 Swedish paleontologists
- 7 Temples of the Capitoline Hill
- 7 Thanetian life
- 7 The Cumbraes
- 7 The Lost Villages
- 7 Tidal power
- 7 Tied islands
- 7 Triassic Madagascar
- 7 Tributaries of the Rappahannock River
- 7 Tributaries of the Reno
- 7 Tributaries of the Ural River
- 7 Tungstate minerals
- 7 Valle Spluga
- 7 Valleys of Asia
- 7 Valleys of Nepal
- 7 Valleys of Poland
- 7 Vanadium minerals
- 7 Victims of the 2010 Haiti earthquake
- 7 Vitreous rocks
- 7 Volcanoes of Australia
- 7 Volcanoes of French Polynesia
- 7 Volcanoes of India
- 7 Volcanoes of Portugal
- 7 Volcanoes of Samoa
- 7 Volcanoes of the Tyrrhenian
- 7 Volcanoes of Tokyo
- 7 Volcanoes of Zealandia
- 7 Waterfalls of North Macedonia
- 7 Waterfalls of Switzerland
- 7 Waterfalls of Venezuela
- 7 Waterfalls of Zambia
- 7 Water gaps of Virginia
- 7 Waterways
- 7 Weathering landforms
- 7 Weeping trees
- 7 Westmoreland County, Pennsylvania
- 7 Wetlands of Bangladesh
- 7 Wetlands of Canada
- 7 Wetlands of Serbia
- 7 White Nile
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- 7 Youth ice hockey
- 7 Zanclean
- 80 Antiseptics
- 80 Complex volcanoes
- 80 Crystallography
- 80 Fossils of South Africa
- 80 Physiographic sections
- 80 Rivers of Estonia
- 80 Rivers of Ethiopia
- 8 11th century BC
- 8 1930 earthquakes
- 8 1935 earthquakes
- 8 1946 earthquakes
- 8 1949 earthquakes
- 8 1970 earthquakes
- 81 Burgess Shale fossils
- 81 Fauna of the Mojave Desert
- 81 Gifford Pinchot National Forest
- 81 Glaciers of the Alps
- 81 History of the Scottish Highlands
- 81 Islands of Denmark
- 81 Jurassic System of Europe
- 81 Landforms
- 81 Mountains of Antarctica
- 81 Paleozoic life of Nunavut
- 81 Populated places on the Euphrates River
- 81 Rivers of the Philippines
- 81 Temperate broadleaf and mixed forests
- 8 2001 earthquakes
- 8 21st century sinkholes
- 82 Biodiversity
- 82 Bosphorus
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- 82 Fossils of Italy
- 82 Madagascar stubs
- 82 Tuff formations
- 82 Western (genre) comics
- 83 George Washington and Jefferson National Forests
- 83 Highlands
- 83 Mediterranean cuisine
- 83 Populated places in the Sonoran Desert
- 84 Diablo Range
- 84 Fossils of Colombia
- 84 Fossils of Spain
- 84 Islands of Turkey
- 84 Isle of Purbeck
- 84 Mountains of Nepal
- 84 Mount Hood National Forest
- 84 Neotropical ecoregions
- 85 Andaman and Nicobar geography stubs
- 85 Coastal and oceanic landforms
- 85 Fossil taxa described in 2012
- 85 Grasses of Europe
- 85 Hotspot volcanoes
- 85 Insecticides
- 85 International rivers of North America
- 85 Mining in film
- 85 Paleoanthropological sites
- 85 Polygenetic volcanoes
- 85 Rivers of Colombia
- 85 Tectonics stubs
- 86 Black Hills
- 86 Coats of arms with trees
- 86 Copper(II) minerals
- 86 Fossil taxa described in 2013
- 86 Fossil taxa described in 2014
- 86 Glaciers of the North Cascades
- 86 Santa Monica Mountains
- 8 6th millennium BC
- 87 Andean Volcanic Belt
- 87 Endangered plants
- 87 Neanderthal sites
- 87 Paleontology in Alberta
- 87 Shrubs
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- 88 Canadian geologic formation stubs
- 88 Ecoregions of Asia
- 88 Edwards Air Force Base
- 88 Fruit trees
- 88 Mountains on the Appalachian Trail
- 89 Aloe
- 89 Exmoor
- 89 Geodesy
- 89 International mountains of Asia
- 89 Limestone buildings in the United States
- 89 Luminescent minerals
- 89 Nucleotides
- 89 Petrology
- 89 Rivers of Argentina
- 89 Strike slip faults
- 8 9th century BC
- 8 Abel Tasman National Park
- 8 Aeronautics
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- 8 Alor Archipelago
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- 8 Ancient Roman baths in Rome
- 8 Anti fracking movement
- 8 Apache tribes
- 8 Archaea
- 8 Archaea phyla
- 8 Archaeological sites in Turkey
- 8 Archipelagoes of Canada
- 8 Archipelagoes of New Zealand
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- 8 Archipelagoes of Vietnam
- 8 Argentine paleontologists
- 8 Arthur's Pass National Park
- 8 Artificial lakes of Germany
- 8 Artificial landforms
- 8 Asphalt lakes
- 8 Asteroid mining
- 8 Atolls of the Cook Islands
- 8 Austrian rock climbers
- 8 Batam
- 8 Bays of South Africa
- 8 Bays of Sweden
- 8 Beaches of Albania
- 8 Beaches of China
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- 8 Beaches of South Africa
- 8 Beaches of Trinidad and Tobago
- 8 Biak
- 8 Biogeomorphology
- 8 Biomes
- 8 Biota of archipelagoes
- 8 Bithynia
- 8 Blue Nile
- 8 Bodies of water of Albania
- 8 Bodies of water of the Bering Sea
- 8 Bodies of water of the North Sea
- 8 Bodies of water of the Solomon Islands
- 8 Books about the Sahara
- 8 Braided rivers in New Zealand
- 8 Breccias
- 8 British geophysicists
- 8 Brunei
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- 8 Cambria County, Pennsylvania
- 8 Canadian geophysicists
- 8 Canal restoration
- 8 Canyons and gorges of Asia
- 8 Canyons and gorges of Georgia (country)
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- 8 Carbon cycle
- 8 Cariboo
- 8 Caspian Sea basin
- 8 Cave dwellings
- 8 Caves of Iceland
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- 8 Caves used for hiding
- 8 Channels of the United States
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- 8 Clearwater National Forest
- 8 Cliffs of Australia
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- 8 Climate change related lists
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- 8 Colliers of Australia
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- 8 Comoros archipelago
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- 8 Cornwall
- 8 Coves
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- 8 Cretaceous first appearances
- 8 Currents of the Arctic Ocean
- 8 Dams in the Green River (Colorado River tributary) basin
- 8 Dams on the Krishna River
- 8 Danish ecologists
- 8 Dead Sea basin
- 8 Deserts of Egypt
- 8 Dinosaur National Monument
- 8 Dinosaurs in amusement parks
- 8 Disulfides
- 8 Documentary films about dinosaurs
- 8 Drainage basins of Australia
- 8 Drainage basins of the Barents Sea
- 8 Drainage basins of the Kara Sea
- 8 Dredges
- 8 Duluth, Minnesota
- 8 Dunes on Mars
- 8 Durango
- 8 Early Jurassic Europe
- 8 Earthquakes in British Columbia
- 8 Earthquakes in Tajikistan
- 8 Earthquakes
- 8 Eastern Arc Mountains
- 8 Ecological techniques
- 8 Ecoregions of Algeria
- 8 Ecoregions of France
- 8 Ecoregions of Honduras
- 8 Ecoregions of Laos
- 8 Ecoregions of Madagascar
- 8 Ecoregions of Malawi
- 8 Ecoregions of Mauritania
- 8 Ecoregions of Saudi Arabia
- 8 Ecoregions of Uganda
- 8 Ecoregions of Yemen
- 8 Egg fossil stubs
- 8 Elk River (West Virginia)
- 8 Endemic fauna of Arkansas
- 8 Endorheic lakes of North America
- 8 English mineralogists
- 8 Erie, Pennsylvania
- 8 Evolutionary ecology
- 8 Exe catchment
- 8 Fictional archipelagoes
- 8 Fictional Eurasian people
- 8 Fictional lakes
- 8 Films based on Journey to the Center of the Earth
- 8 Fish conservation
- 8 Flood control in the United States
- 8 Former coal fired power stations
- 8 Former supercontinents
- 8 Fossil algae
- 8 Fossils of Austria
- 8 Fossil taxa described in 1825
- 8 Fossil taxa described in 1832
- 8 Fossil taxa described in 1866
- 8 Fossil taxa described in 1907
- 8 Fossil taxa described in 1919
- 8 Fossil taxa described in 1947
- 8 Frasnian Stage
- 8 French geodesists
- 8 Freshwater molluscs of Oceania
- 8 Fumigants
- 8 Gambier Islands
- 8 Geography of Easter Island
- 8 Geography of New Guinea
- 8 Geography of Oceania
- 8 Geography of the Faroe Islands
- 8 Geography of the Southern Ocean
- 8 Geologic formations of Kazakhstan
- 8 Geologic formations of Peru
- 8 Geologic formations of Poland
- 8 Geology of the North Sea
- 8 Geotechnical shoring structures
- 8 Ghost Dance movement
- 8 Givetian Stage
- 8 Glacial erratics
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- 8 Great Lakes related lists
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- 8 Gulfs of the Philippines
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- 8 Hemingfordian
- 8 Highlands Region
- 8 Hill forts
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- 8 Hills of Rome
- 8 Hills of Spain
- 8 History of Carpathian Ruthenia
- 8 History of coal mining
- 8 History of Franz Josef Land
- 8 History of Oceania
- 8 Hokusai quadrangle
- 8 Hot springs of Australia
- 8 Huichol
- 8 Hyde Park, Sydney
- 8 Hydraulic fracturing by country
- 8 Ice Age National Scientific Reserve
- 8 Icebreakers of Norway
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- 8 Impact events
- 8 Individual trees
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- 8 Intermediate rocks
- 8 Irish Free State
- 8 Islands of Campania
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- 8 Landforms of Antique (province)
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- 8 Landforms of Eastern Province, Sri Lanka
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- 8 Landforms of Haute Savoie
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- 8 Landforms of Jammu and Kashmir
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- 8 Landforms of Kerala
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- 8 Landforms of La Paz Department (Bolivia)
- 8 Landforms of Lefkada (regional unit)
- 8 Landforms of Liguria
- 8 Landforms of Mississippi
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- 8 Landforms of the canton of Uri
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- 8 Landforms of the Mediterranean Sea
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- 8 Landforms of Trikala (regional unit)
- 8 Landforms of West Virginia
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- 8 Landforms of Yamanashi Prefecture
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- 8 Lanfair Valley
- 8 Languages of ancient Anatolia
- 8 Lava caves
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- 8 Lindisfarne
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- 8 Lists of countries by mineral production
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- 8 Lithosphere
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- 8 Lowest points of U S states
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- 8 Marine salvage
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- 8 Mesoproterozoic geology
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- 8 Metallogenetic provinces
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- 8 Middle Jurassic Europe
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- 8 Milk River Formation
- 8 Mining in Australia
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- 8 Mountain ranges of the Western Romanian Carpathians
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- 8 Mountains of Jordan
- 8 Mountains of North Korea
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- 8 Mount Everest in fiction
- 8 Muskegon, Michigan
- 8 Mustersan
- 8 National Register of Historic Places in Canyonlands National Park
- 8 Natural gas vehicles
- 8 Natural regions of Colombia
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- 8 Nature conservation in Tanzania
- 8 Naugatuck River Valley
- 8 Neogene Mexico
- 8 Neogene Trinidad and Tobago
- 8 Neonicotinoids
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- 8 New Zealand related lists
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- 8 Oases of Egypt
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- 8 Oceania
- 8 Oil fields of Alberta
- 8 Oil platform disasters
- 8 Oligocene North America
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- 8 Ordovician Canada
- 8 Ord River
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- 8 Paleocene Series of Europe
- 8 Paleogene Germany
- 8 Paleontological institutions and organizations
- 8 Paleontology in Denmark
- 8 Paleontology in Georgia (U S state)
- 8 Paleontology in Georgia (U.S. state)
- 8 Paleontology in Jiangxi
- 8 Paleontology in Kazakhstan
- 8 Paleontology in Niger
- 8 Paleontology in Venezuela
- 8 Paleontology in Virginia
- 8 Paleozoic paleontological sites of North America
- 8 Pamphylia
- 8 Paperboard
- 8 Pawnee people
- 8 Pelion
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- 8 Pennington County, South Dakota
- 8 People from Aden
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- 8 People involved with desert greening
- 8 Peopling of the Americas
- 8 Physiographic regions of Peru
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- 8 Plains of India
- 8 Plains of Italy
- 8 Plains of Ukraine
- 8 Plateaus of India
- 8 Pleistocene Asia
- 8 Pleistocene geology
- 8 Pleistocene Mexico
- 8 Pleistocene paleontological sites of North America
- 8 Pleistocene Paraguay
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- 8 Pliocene United States
- 8 Politics of climate change
- 8 Politics of Coahuila
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- 8 Pre Columbian Great Plains cuisine
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- 8 Prehistoric biota stubs
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- 8 Silurian System of Europe
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- 8 Sinking rivers of Bosnia and Herzegovina
- 8 Siverskyi Donets
- 8 South African assemblage zones
- 8 Southern Kuriles
- 8 South Malawi montane forest grassland mosaic
- 8 Submarine topography
- 8 Subterranean rivers of Bosnia and Herzegovina
- 8 Succulent euphorbias
- 8 Sugar Loaf Bay
- 8 Sulfonium compounds
- 8 Sunda Strait
- 8 Surface features of 4 Vesta
- 8 Surface features of Ganymede (moon)
- 8 Suture zones
- 8 Swiss paleontologists
- 8 Synthetic fuels
- 8 Tectonic landforms
- 8 Television stations in Sonora
- 8 Tellurite and selenite minerals
- 8 Tenochtitlan
- 8 The Solent
- 8 Thiolates
- 8 Tidal bores
- 8 Transatlantic relations
- 8 Treaties extended to Clipperton Island
- 8 Triassic Antarctica
- 8 Triassic paleontological sites
- 8 Triassic System of Asia
- 8 Tributaries of Lake Como
- 8 Tributaries of Lake Ladoga
- 8 Tributaries of the Indigirka
- 8 Tributaries of the Yana River
- 8 Trophic ecology
- 8 Tuareg people
- 8 Tuareg rebellions
- 8 Tugela River
- 8 Undersea banks of the Pacific Ocean
- 8 Underwater ridges of the Indian Ocean
- 8 Valleys of Antarctica
- 8 Valleys of Argentina
- 8 Valleys of India
- 8 Valleys of Japan
- 8 Valleys of Turkey
- 8 Valleys on the Moon
- 8 Vanuatu related lists
- 8 Volcanic degassing
- 8 Volcanic Seven Summits
- 8 Volcanoes of Algeria
- 8 Volcanoes of American Samoa
- 8 Volcanoes of Russia
- 8 Volcanoes of Tanzania
- 8 Volcanoes of the Aegean
- 8 Volcanoes of Tonga
- 8 Volcanoes of Turkey
- 8 Volcanogenic massive sulfide ore deposits
- 8 Waterfalls of Nigeria
- 8 Waterfalls of Russia
- 8 Watersheds of Canada
- 8 Weser basin
- 8 Westland Tai Poutini National Park
- 8 Wetlands of Anguilla
- 8 Wetlands of Germany
- 8 Wetlands of New Zealand
- 8 Wind gaps of the United States
- 8 Wood Buffalo National Park
- 8 Yalu River
- 8 Ypresian life
- 8 Zamboanga Peninsula
- 90 Antiviral drugs
- 90 Biogeography
- 90 Louisiade Archipelago
- 90 LQ20 quadrangle
- 90 Main Southern railway line, New South Wales
- 90 Trees
- 9 1952 earthquakes
- 9 1975 earthquakes
- 9 1983 earthquakes
- 9 1994 earthquakes
- 9 1995 earthquakes
- 9 1998 earthquakes
- 91 Physiographic provinces
- 9 1st century BC
- 9 20th century in the Colony of Aden
- 92 Fossils of Canada
- 92 Fossil taxa described in 2009
- 92 Glacial lakes of the Sawtooth National Forest
- 92 Great Lakes ships
- 92 Lochs of Highland (council area)
- 92 LQ13 quadrangle
- 92 Nature reserves in South Africa
- 9 2nd millennium BC conflicts
- 9 2nd millennium BC works
- 92 Rivers of Lithuania
- 92 Rivers of Norway
- 92 San Bernardino Mountains
- 92 Surveying
- 93 Firth of Clyde
- 93 Marble sculptures in Italy
- 93 Tetragonal minerals
- 93 Wild caves
- 94 Building stone
- 94 Herbicides
- 94 Somerset Levels
- 95 Deserts and xeric shrublands
- 95 Lead minerals
- 95 Mountains of the Philippines
- 95 Paleozoic life of the Northwest Territories
- 9 5th century BC
- 95 Tributaries of the Mississippi River
- 96 Lake stubs
- 96 Mountaineering deaths
- 96 Mountains of Italy
- 96 Peak District
- 96 Petrology stubs
- 96 Show caves in the United States
- 96 Steamboats of the Columbia River
- 97 Albian Stage
- 97 Amarna letters
- 97 Automotive fuel retailers
- 97 Paleozoic life of Ontario
- 98 American ecologists
- 98 Fungicides
- 98 Natural regions of England
- 98 Seamounts of the Pacific Ocean
- 98 Sedimentology
- 99 Campanian Stage
- 99 Private islands
- 9 Actinidia
- 9 Admiralty Islands
- 9 Admiralty law
- 9 Agates
- 9 Allegheny National Forest
- 9 American Samoa related lists
- 9 Amphiaspidida
- 9 Anacleto Formation
- 9 Antiretroviral drugs
- 9 Aquatic biomes
- 9 Archipelagoes of Oceania
- 9 Archipelagoes of Sweden
- 9 Archipelagoes of the Philippines
- 9 Arkengarthdale
- 9 Artinskian Stage
- 9 Aru Islands
- 9 Asia related lists
- 9 Astronautics
- 9 Atlantic Ocean related lists
- 9 Atolls of Tuvalu
- 9 Avon River (Western Australia)
- 9 Baja California Peninsula
- 9 Banda Islands
- 9 Banda Sea
- 9 Barat Daya Islands
- 9 Barbados related lists
- 9 Bays of Greece
- 9 Beaches of Karachi
- 9 Beaches of Vancouver
- 9 Beaches of Vietnam
- 9 Benbecula
- 9 Berry Islands
- 9 Bikini Atoll
- 9 Bimini
- 9 Biodiversity Heritage Sites of India
- 9 Blackfoot culture
- 9 Bohol Sea
- 9 Bonaparte Archipelago
- 9 Books based on Dune (franchise)
- 9 Boundary layer meteorology
- 9 Bridgerian
- 9 British volcanologists
- 9 Buen Formation
- 9 Buildings and structures in Antananarivo
- 9 Buttes of the United States
- 9 Caicos Islands
- 9 Calamian Islands
- 9 Canadian Arctic Archipelago
- 9 Canadian paleontologists
- 9 Candeleros Formation
- 9 Canvey Island
- 9 Canyons and gorges of China
- 9 Carboniferous southern paleotemperate deposits
- 9 Carboniferous United States
- 9 Cave minerals
- 9 Cayman Islands related lists
- 9 Cemetery Hill
- 9 Central Valley (California)
- 9 Chalcedony
- 9 Chios
- 9 Clay
- 9 Clear Water Bay Peninsula
- 9 Coasts of Italy
- 9 Coasts of Russia
- 9 Coloane
- 9 Corregidor
- 9 Coves of Canada
- 9 Cozumel
- 9 Cretaceous Germany
- 9 Cretaceous paleontological sites of South America
- 9 Cryozoa
- 9 Dart catchment
- 9 David MacBrayne
- 9 Deaths by stoning
- 9 Demopolis Chalk
- 9 Dendrology
- 9 Den Helder
- 9 Desertification
- 9 Desert planets in fiction
- 9 Deserts of South Australia
- 9 Devonian fish stubs
- 9 Devonian impact craters
- 9 Devonian United States
- 9 Dinosaur fossils
- 9 Dinosaurs in fiction
- 9 Dinosaurs in popular culture
- 9 Dnieper basin
- 9 Don basin
- 9 Drainage basins of the Sea of Okhotsk
- 9 Economy of Europe
- 9 Ecoregions of Bhutan
- 9 Ecoregions of Chad
- 9 Ecoregions of Costa Rica
- 9 Ecoregions of Nepal
- 9 Ecoregions of Nicaragua
- 9 Ecoregions of the Republic of the Congo
- 9 Education in Europe
- 9 Enga Province
- 9 Eocene Series of Europe
- 9 Escarpments
- 9 Estuaries of India
- 9 Eukaryotic selection compounds
- 9 Extraterrestrial mountains
- 9 Famennian life
- 9 Fauna of the Yuma Desert
- 9 Fayette County, Pennsylvania
- 9 Feldspathoid
- 9 Fertilizer companies of India
- 9 Fezouata Formation fossils
- 9 Fjords of Svalbard
- 9 Flathead National Forest
- 9 Forest pathology
- 9 Former reservoirs
- 9 Fortescue River
- 9 Fossil fuels
- 9 Fossils of Cuba
- 9 Fossils of Hungary
- 9 Fossils of Pakistan
- 9 Fossils of Svalbard
- 9 Fossil taxa described in 1834
- 9 Fossil taxa described in 1865
- 9 Fossil taxa described in 1880
- 9 Fossil taxa described in 1896
- 9 Fossil taxa described in 1899
- 9 Fossil taxa described in 1918
- 9 Fossil taxa described in 1945
- 9 Fossil taxa described in 1950
- 9 Fossil taxa described in 1951
- 9 Fossil taxa described in 1961
- 9 Fossil taxa described in 1963
- 9 Fungus ecology
- 9 Ganges basin
- 9 Gannan Tibetan Autonomous Prefecture
- 9 Garnet gemstones
- 9 Gazprom oil and gas fields
- 9 Geiyo Islands
- 9 Geodetic surveys
- 9 Geography of Cyprus
- 9 Geography of Sonora
- 9 Geography of the Indian Ocean
- 9 Geologic formations of Botswana
- 9 Geologic formations of Sweden
- 9 Geologic formations of Uruguay
- 9 Geologic groups of Europe
- 9 Geophysical observatories
- 9 Geophysics journals
- 9 Georgian Black Sea coast
- 9 Geysers of New Zealand
- 9 Glacial erratics of Germany
- 9 Glaciers of Georgia (country)
- 9 Glaciers of New Zealand
- 9 GLONASS satellites
- 9 Gneiss
- 9 Goat Rocks
- 9 Goderich, Ontario
- 9 Golden jubilees
- 9 Gold minerals
- 9 Grand Bahama
- 9 Great Dismal Swamp
- 9 Green Bay, Wisconsin
- 9 Guinean montane forests
- 9 Gulf of Mannar
- 9 Gulf of Papua
- 9 Gulfs of Australia
- 9 Hainan
- 9 Hastings Park
- 9 Headlands of Russia
- 9 Headlands of Ukraine
- 9 Hills of Estonia
- 9 Hills of Israel
- 9 Hills of Lithuania
- 9 Hills on Mars
- 9 History of Easter Island
- 9 History of Jalisco
- 9 History of Madeira
- 9 History of Seychelles
- 9 History of the Bahamas
- 9 History of the Dardanelles
- 9 History of the Faroe Islands
- 9 Hudson Valley
- 9 Huincul Formation
- 9 Hula Valley
- 9 Hydrogeologists
- 9 Icebreakers of Sweden
- 9 Ice caps of Russia
- 9 Igneous petrology of Ontario
- 9 Illegal mining
- 9 Images of South America
- 9 Impact craters of Quebec
- 9 Incremental dating
- 9 Indian jewellery designers
- 9 Indian Springs, Nevada
- 9 Inorganic insecticides
- 9 Inorganic sulfur compounds
- 9 Insect class gunboats
- 9 In situ geotechnical investigations
- 9 International archipelagoes
- 9 International waterfalls
- 9 Invertebrate paleozoology
- 9 Iron mining
- 9 Iron ore railways
- 9 Irrawaddy River
- 9 Irvingtonian
- 9 Islands of Bangladesh
- 9 Islands of Haiti
- 9 Islands of Malta
- 9 Islands of Saudi Arabia
- 9 Isthmuses of Europe
- 9 John Day Fossil Beds National Monument
- 9 Johnston Atoll
- 9 Jurassic Russia
- 9 Kabul River
- 9 Karst springs of Bosnia and Herzegovina
- 9 Kastellorizo
- 9 Katian
- 9 Kootenai National Forest
- 9 Koror
- 9 Ladinian life
- 9 Lagoons of Anguilla
- 9 Lagoons of Australia
- 9 Lake Nasser
- 9 Lakes of Bulgaria
- 9 Lakes of Iraq
- 9 Lakes of Myanmar
- 9 Lake Titicaca
- 9 Lamu Archipelago
- 9 Landforms of Alabama
- 9 Landforms of Alberta
- 9 Landforms of Ankara Province
- 9 Landforms of Atacama Region
- 9 Landforms of Bahia
- 9 Landforms of Bavaria
- 9 Landforms of Cavite
- 9 Landforms of Chiapas
- 9 Landforms of Chongqing
- 9 Landforms of Florida
- 9 Landforms of Halland County
- 9 Landforms of Haute Corse
- 9 Landforms of Iowa
- 9 Landforms of Jordan
- 9 Landforms of Kabul Province
- 9 Landforms of Kastoria (regional unit)
- 9 Landforms of Khuzestan Province
- 9 Landforms of Lakshadweep
- 9 Landforms of Lorestan Province
- 9 Landforms of Maharashtra
- 9 Landforms of Mauritania
- 9 Landforms of Minnesota
- 9 Landforms of Nagano Prefecture
- 9 Landforms of Nagasaki Prefecture
- 9 Landforms of North Carolina
- 9 Landforms of Nueva Vizcaya
- 9 Landforms of Ostrobothnia (region)
- 9 Landforms of Pahang
- 9 Landforms of Parwan Province
- 9 Landforms of Rethymno (regional unit)
- 9 Landforms of Rift Valley Province
- 9 Landforms of Rio Grande do Norte
- 9 Landforms of Santa Catarina (state)
- 9 Landforms of Satakunta
- 9 Landforms of South Australia
- 9 Landforms of South Dakota
- 9 Landforms of Thessaloniki (regional unit)
- 9 Landforms of Tierra del Fuego Province, Argentina
- 9 Landforms of Veneto
- 9 Landforms of Viken (county)
- 9 Landforms of Wallonia
- 9 Landforms of West Attica
- 9 Landforms of Zeeland
- 9 Lascaris towers
- 9 Last Glacial Maximum
- 9 Late antiquity
- 9 Lavinia Planitia quadrangle
- 9 Law of the sea treaties
- 9 Lawrence County, South Dakota
- 9 Lists of earthquakes
- 9 Lists of islands
- 9 Lists of islands of Scotland
- 9 Llano Estacado
- 9 Long Island related lists
- 9 Los Colorados Formation
- 9 Maars
- 9 Maars of New Zealand
- 9 Mafic rocks
- 9 Makgadikgadi Pan
- 9 Malta related lists
- 9 Manganese(III) minerals
- 9 Manhattan related lists
- 9 Manti La Sal National Forest
- 9 Mesoproterozoic
- 9 Meteorite mineralogy and petrology
- 9 Meteorite researchers
- 9 Middle Ages
- 9 Milos
- 9 Mining engineering
- 9 Miocene geology
- 9 Molybdenum minerals
- 9 Morrison fauna
- 9 Mountain huts
- 9 Mountain passes of Australia
- 9 Mountain passes of Ireland
- 9 Mountain passes of Nepal
- 9 Mountain passes of Romania
- 9 Mountain ranges of Serbia
- 9 Mountain ranges of Syria
- 9 Mountains and hills of Bohemian Switzerland
- 9 Mountains of Bhutan
- 9 Mountains of Canada
- 9 Mountains of Kazakhstan
- 9 Mountains of Laos
- 9 Mountains of Seoul
- 9 Mountains of Syria
- 9 Mountains of the Biellese Alps
- 9 Mountains of the Democratic Republic of the Congo
- 9 Mountain stubs
- 9 Museums of the Great Lakes
- 9 Mythological rivers
- 9 Natural gas fields in the Soviet Union
- 9 Natural gas in the United States
- 9 Natural gas safety
- 9 Natural regions of Venezuela
- 9 Nature conservation in Indonesia
- 9 Neogene Ecuador
- 9 Neruda quadrangle
- 9 New Caledonia
- 9 Niagara River
- 9 Nickel mining companies
- 9 Oases of Chile
- 9 Oceanic basins of the Atlantic Ocean
- 9 Oceanic gyres
- 9 Oil fields of Nigeria
- 9 Oil shale formations
- 9 Oil shale in the United States
- 9 Opals
- 9 Ottawa National Forest
- 9 Pacific Ocean related lists
- 9 Paleoanthropology
- 9 Paleobiologists
- 9 Paleobotany
- 9 Paleocene extinctions
- 9 Paleontology in Mexico
- 9 Paleontology in Michigan
- 9 Paleontology in Nebraska
- 9 Paleozoic animals of Europe
- 9 Pantanal
- 9 Peloponnese
- 9 Peninsulas of Spain
- 9 Peninsulas of the Philippines
- 9 People from Corsica
- 9 Periyar (river)
- 9 Petroleum based lubricants
- 9 Phosphonothioates
- 9 Phosphorodiamidates
- 9 Physiographic regions of Mexico
- 9 Pictured Rocks National Lakeshore
- 9 Pipe laying ships
- 9 Pipelines under the Mediterranean Sea
- 9 Plains of Greece
- 9 Planetary spots
- 9 Plaquemines Parish, Louisiana
- 9 Plateaus of China
- 9 Plateaus of Italy
- 9 Pleistocene South America
- 9 Pliocene animals
- 9 Polymorphism (biology)
- 9 Portezuelo Formation
- 9 Prahova Valley
- 9 Precambrian Canada
- 9 Prehistoric animals of Asia
- 9 Presidents of Madagascar
- 9 Prize warfare
- 9 Pyrite group
- 9 Qumran
- 9 Radio stations in Nuevo León
- 9 Rancho Mirage, California
- 9 Reefs
- 9 Rhaetian life
- 9 Ribble catchment
- 9 Rio Conchos
- 9 Rivers of Antarctica
- 9 Rivers of East Timor
- 9 Rivers of North Korea
- 9 Rivers of Senegal
- 9 Rivers of Temagami
- 9 Rivers of the Jura
- 9 Rivers of the Mogollon Rim
- 9 Rivers of Yosemite National Park
- 9 Riverworld
- 9 Roanoke River
- 9 Rock formations of Europe
- 9 Rock formations of India
- 9 Rock formations of Yosemite National Park
- 9 Saint Domingue
- 9 Saint Vincent and the Grenadines related lists
- 9 Salt flats of Chile
- 9 Sandstone buildings
- 9 Sandstone houses in Australia
- 9 Sandusky, Ohio
- 9 San Francisco Bay watershed
- 9 San Juan Creek
- 9 Schools of mines in the United States
- 9 Seas of Greenland
- 9 Secondary metabolites
- 9 Sedimentary basins of Chile
- 9 Serpentine group
- 9 Seven Third Summits
- 9 Shale gas
- 9 Shashe River
- 9 Shear zones
- 9 Shipwrecks of Lake Erie
- 9 Shipwrecks of Lake Ontario
- 9 Shipwrecks of the Columbia River system
- 9 Six thousanders of the Pamir
- 9 Ski areas and resorts
- 9 Sobat River
- 9 Solovetsky Islands
- 9 Souda Bay
- 9 South African paleontologists
- 9 Spanish paleontologists
- 9 Spa towns in Hungary
- 9 Spa towns in Portugal
- 9 Spa towns in the Philippines
- 9 Spits of Europe
- 9 Steamboats of the Yukon River
- 9 Stour catchment
- 9 Strathcona Provincial Park
- 9 Subantarctic islands
- 9 Subterranean waterfalls
- 9 Sulfur metabolism
- 9 Sulu Archipelago
- 9 Survey marks in Queensland
- 9 Tanami Desert
- 9 Tellurate and selenate minerals
- 9 Test catchment
- 9 Teutoburg Forest
- 9 Thallium minerals
- 9 Tiupampan
- 9 Tokyo Bay
- 9 Tongariro Volcanic Centre
- 9 Topographers
- 9 Topography techniques
- 9 Tourist attractions in Jalisco
- 9 Tree diseases
- 9 Triassic Norway
- 9 Tualatin River
- 9 Turbidite deposits
- 9 Ubangi River
- 9 Uinta National Forest
- 9 Uranium mines
- 9 Victoria Falls
- 9 Volcanoes of Bolivia
- 9 Volcanoes of Guatemala
- 9 Volcanoes of Morocco
- 9 Volcanoes of the French Southern and Antarctic Lands
- 9 Volcanoes of the Southern Ocean
- 9 Volta River
- 9 V series nerve agents
- 9 Waterfalls
- 9 Waterfalls of Bulgaria
- 9 Waterfalls of Sweden
- 9 Western Indo Pacific
- 9 Western Romanian Carpathians
- 9 Wetlands of Japan
- 9 Wetlands of Spain
- 9 Whirlpools
- 9 Whiteshell Provincial Park
- 9 Wisteria
- 9 Wittow
- 9 Ypresian insects
- 9 Yungas
- map:Subfields of geology
- Subfields of geology