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