Constructed languageW
Constructed language
Mark FettesW
Mark Fettes
Lingua francaW
Lingua franca
Linguistic ImperialismW
Linguistic Imperialism
Charles Kay OgdenW
Charles Kay Ogden
Pan-Romance languageW
Pan-Romance language
PasigraphyW
Pasigraphy
Plains Indian Sign LanguageW
Plains Indian Sign Language
Plateau Sign LanguageW
Plateau Sign Language