caijia civilization codeswitching(linguistics) congresses dialects disciplines documentation es425 etc ethnology europe general grammar grammatik handbooks indigenouspeoples languageandculture languageandlanguages languagearts languageattrition languagemaintenance languageobsolescence languagepolicy languagerevival languages linguisticchange linguisticminorities linguistics manuals minderheidstalen politicalaspects scotland scottishgaeliclanguage secondlanguageacquisition sinitischesprachen sino-tibetanlanguages socialaspects sociolinguistics studyandteaching taalonderwijs typologie