Columbia subject headings:
Harvard subject headings:
Anthropological linguistics--Germany--History--20th century.
Anthropological linguistics--History--20th century.
Historical linguistics--Germany--History--20th century.
Historical linguistics--History--20th century.
Linguistics--Germany--History--20th century.
Linguistics--History--20th century
Sociolinguistics--Germany--History--20th century.
Sociolinguistics--History--20th century.
Princeton subject headings:
Historical linguistics.
Linguistics.