Columbia subject headings:
Communist countries--Politics and government.
Communist state.
Europe, Eastern--Politics and government--1945-
Soviet Union--Politics and government.
Harvard subject headings:
Communist countries--Politics and government.
Communist state.
Europe, Eastern--Politics and government--1945-
Soviet Union--Politics and government--1917-1936.
Princeton subject headings:
Communist countries--Politics and government.
Communist state.
Europe, Eastern--Politics and government--1945-
Soviet Union--Politics and government.