History of linguistics (20th century) ; Sprachenzählung; Demography (linguistics) ; Language census ; Instruction (medium of) ; Medium of instruction ; Media language ; Language and power; Power and language; Dominance and language; Herrschaft und Sprache; Logocracy; Language ownership; Language and domination ; Kulturvergleich; Language and culture ; Sprache und Ökonomie; Language and economy ; Sprachenpolitik; Language management; Language politics ; History of language (sociolinguistics) ; Sprachenwahl; Language choice; Diglossia ; Sprachattitüde; Linguizismus; Linguicism; Prestige; Sprachliche Unsicherheit; Linguistic insecurity ; Sprachbewahrung; Ethnolinguistic vitality; Vitality, ethnolinguistic; Sprachwechsel; Language shift; Heritage language; Language maintenance ; French (classical) ; Classical French ; Gascon ; Old Gascon