Columbia subject headings:
Communism--Soviet Union.
Soviet Union--Economic conditions--1917-1945.
Soviet Union--Social conditions.
Soviet Union--Social condititions.
Harvard subject headings:
Communism--Soviet Union
Soviet Union--Economic conditions--1917-1945.
Soviet Union--Social conditions.
Princeton subject headings:
Communism--Soviet Union.
Soviet Union--Economic conditions--1917-1945.
Soviet Union--Social conditions.