Columbia subject headings:
Labor unions--Soviet Union.
Soviet Union--Politics and government--1953-1985.
Working class--Soviet Union.
Harvard subject headings:
Labor unions--Soviet Union
Soviet Union--Social conditions--1970-1991.
Working class--Soviet Union
Princeton subject headings:
Labor unions--Soviet Union.
Soviet Union--Politics and government--1953-1985.
Working class--Soviet Union--Political activity.