Columbia subject headings:
Soviet Union--Economic conditions--1917-1945.
Soviet Union--Economic policy.
Soviet Union--Politics and government--1917-1936.
Soviet Union--Politics and government--1936-1953.
Harvard subject headings:
Soviet Union--Economic conditions--1917-1945
Soviet Union--Economic policy
Soviet Union--Foreign relations--1917-1945
Princeton subject headings:
Soviet Union--Economic conditions--1917-1945.
Soviet Union--Economic policy.
Soviet Union--Politics and government--1917-1936.
Soviet Union--Politics and government--1936-1953.