Columbia subject headings:
Soviet Union--Economic policy.
Soviet Union--History.
Soviet Union--Politics and government--1917-1936.
Soviet Union--Politics and government--1936-1953.
Harvard subject headings:
Soviet Union--Economic policy.
Soviet Union--History.
Soviet Union--Politics and government--1917-1936.
Soviet Union--Politics and government--1936-1953.
Princeton subject headings:
Soviet Union--Economic conditions.
Soviet Union--History.
Soviet Union--Politics and government.