Columbia subject headings:
Harvard subject headings:
German language--Social aspects--Germany--20th century.
Language policy--Political aspects--Germany--20th century.
Language purism--Germany--20th century.
Nationalism--Germany
Princeton subject headings:
German language--Social aspects--Germany--20th century.
Language policy--Political aspects--Germany--20th century.
Language purism--Germany--20th century.
Nationalism--Germany.