Columbia subject headings:
Harvard subject headings:
Peasants--Russia (Federation)--History--20th century.
Peasants--Soviet Union--History--20th century.
Russia (Federation)--Social conditions--20th century.
Soviet Union--Social conditions.
Working class--Political activity--History--20th century.
Working class--Russia (Federation)--History--20th century.
Working class--Soviet Union--History--20th century.
Princeton subject headings:
Peasants--Russia (Federation)--History--20th century.
Peasants--Soviet Union--History--20th century.
Russia (Federation)--Social conditions--20th century.
Soviet Union--Social conditions--20th century.
Working class--Political activity--History--20th century.
Working class--Russia (Federation)--History--20th century.
Working class--Soviet Union--History--20th century.