Sprachenzählung; Demography (linguistics) ; Language census ; Language and power; Power and language; Dominance and language; Herrschaft und Sprache; Logocracy; Language ownership; Language and domination ; Sprachenpolitik; Language management; Language politics ; Visuelle Mehrsprachigkeitsforschung; Linguistic landscape ; Verkehrsschild; Traffic sign; Sign board (text type) ; Lettish; Latvian ; Latgalian ; Russian