Columbia subject headings:
Communism--Germany--History.
Communism--Soviet Union--History.
Germany--Relations--Soviet Union.
Nationalism and socialism--Soviet Union--History.
Soviet Union--Politics and government.
Soviet Union--Relations--Germany.
Harvard subject headings:
Communism--Germany--History
Communism--Soviet Union--History
Germany--Relations--Soviet Union.
Nationalism and socialism--Soviet Union--History.
Soviet Union--Politics and government--1917-1936.
Soviet Union--Relations--Germany.
Princeton subject headings:
Communism--Germany--History.
Communism--Soviet Union--History.
Germany--Relations--Soviet Union.
Nationalism and socialism--Soviet Union--History.
Soviet Union--Politics and government.
Soviet Union--Relations--Germany.