Columbia subject headings:
Collectivization of agriculture--Soviet Union.
Social conflict--Soviet Union.
Soviet Union--History--1917-1936.
Harvard subject headings:
Social classes--Soviet Union--History--20th century.
Soviet Union--Politics and government--1917-1936.
Soviet Union--Social conditions--1917-1945.
Soviet Union--Social conditions.
Princeton subject headings:
Collectivization of agriculture--Soviet Union.
Social conflict--Soviet Union.
Soviet Union--History--1917-1936.