Sprachenzählung; Demography (linguistics) ; Language census ; Second language acquisition (language teaching) ; Zweitspracherwerb (Unterricht) ; Foreign language teaching ; Language and society ; Sprache und Ökonomie; Language and economy ; Sprachenpolitik; Language management; Language politics ; Einfluss von Sprachen aufeinander; Sprachberührung; Areallinguistik; Languages in contact ; German ; Switzerland (German language in) ; Schweiz (dt. Sprache in der) ; Deutsch in der Schweiz; German in Switzerland; Swiss German ; French ; Schweiz (fr. Sprache in der) ; Switzerland (French language in) ; French in Switzerland ; Other varieties of French ; Italian ; Other varieties of Italian ; Schweiz (it. Sprache in der) ; Switzerland (Italian language in) ; Italian in Switzerland ; Rhaeto-Romance
