Columbia subject headings:
Soviet Union--Politics and government--1917-1936.
Soviet Union--Politics and government--1936-1953.
Harvard subject headings:
Soviet Union--Politics and government--1917-1936.
Soviet Union--Politics and government--1936-1953.
Totalitarianism
Princeton subject headings:
Soviet Union--Politics and government--1917-1936.
Soviet Union--Politics and government--1936-1953.
Totalitarianism.