Columbia subject headings:
Harvard subject headings:
Encyclopedias and dictionaries, German--Germany--History and criticism.
Encyclopedias and dictionaries, German--Soviet Union--History and criticism.
Encyclopedias and dictionaries, German--Switzerland--History and criticism.
Publishers and publishing--Germany--History--20th century
Publishers and publishing--Soviet Union--History--20th century.
Publishers and publishing--Switzerland--History--20th century.
Princeton subject headings:
Censorship--Germany.
Encyclopedias and dictionaries, German--Germany (East)--History and criticism.
Encyclopedias and dictionaries, German--History and criticism.
Encyclopedias and dictionaries, German--Switzerland--History and criticism.
National socialism.
Publishers and publishing--Germany.
Publishers and publishing--Switzerland.