Columbia subject headings:
Harvard subject headings:
Communism--Congresses
Europe--Politics and government--20th century.
Germany--Politics and government--1933-1945--Congresses.
Germany--Politics and government--20th century
National socialism--Congresses.
National socialism.
Nationalism--Europe--20th century.
Soviet Union--Politics and government--1936-1953--Congresses.
Soviet Union--Politics and government--1936-1953.
Totalitarianism--Congresses
Totalitarianism.
Princeton subject headings:
Germany--Politics and government--1933-1945.
National socialism.
Soviet Union--Politics and government--1936-1953.
Totalitarianism.