Columbia subject headings:
Communism--Soviet Union.
Fascism.
National socialism.
Soviet Union--Politics and government.
Totalitarianism.
Harvard subject headings:
Communism--Soviet Union
Fascism.
National socialism.
Soviet Union--Politics and government.
Totalitarianism.
Princeton subject headings:
Communism.
Germany--Civilization.
National socialism.
Soviet Union--Civilization.
Totalitarianism.