Columbia subject headings:
Soviet Union--History--Revolution, 1917-1921.
Soviets (Councils)--History.
Works councils--Soviet Union--History.
Harvard subject headings:
Labor--Soviet Union
Soviet Union--History--Revolution, 1917-1921.
Working class--Soviet Union
Princeton subject headings:
Soviet Union--History--Revolution, 1917-1921.
Soviets (Councils)--History.
Works councils--Soviet Union--History.