Columbia subject headings:
Soviet Union--Economic conditions--1917-1945.
Soviet Union--Politics and government--1917-1936.
Soviet Union--Social conditions.
Soviet Union--Statistics.
Harvard subject headings:
Soviet Union--Economic conditions--1917-1945.
Soviet Union--Politics and government--1917-1936.
Soviet Union--Social conditions.
Soviet Union--Statistics
Princeton subject headings:
Soviet Union--Economic conditions--1917-1945.
Soviet Union--Politics and government--1917-1936.
Soviet Union--Social conditions.
Soviet Union--Statistics.
Statistics.