Columbia subject headings:
Agriculture--Economic aspects--Soviet Union.
Peasants--Soviet Union--History--20th century--Sources.
Soviet Union--Rural conditions.
Harvard subject headings:
Agriculture--Economic aspects--Soviet Union--History--20th century.
Agriculture--Economic aspects--Soviet Union--History.
Farm income--Soviet Union--History--20th century.
Farm income--Soviet Union--History.
Peasants--Soviet Union--Economic conditions.
Soviet Union--Rural conditions.
Princeton subject headings:
Agriculture--Economic aspects--Soviet Union.
Peasants--Soviet Union--History--20th century--Sources.
Soviet Union--Rural conditions.