Sprachenzählung; Demography (linguistics) ; Language census ; Subtractive bilingualism; Semilingualism ; Cross-linguistic influence (psycholing.) ; Language loss (biling.) ; Attrition (biling.) ; Language attrition (biling.) ; Sprachentod; Extinct language; Language endangerment; Bedrohte Sprache; Linguicide; Linguizid; Language death ; Plattdeutsch; Low German dialects ; USA (dt. Sprache in den) ; USA (German language in the) ; German in the USA
