Columbia subject headings:
Strikes and lockouts--Russia--History--20th century.
Strikes and lockouts--Soviet Union--History.
Working class--Russia--History--20th century.
Working class--Soviet Union--History.
Harvard subject headings:
Russia (Federation)--History--Revolution, 1917-1921.
Strikes and lockouts--Russia--History--20th century.
Strikes and lockouts--Soviet Union--History.
Working class--Political activity--Russia--History--20th century.
Working class--Russia--History--20th century.
Working class--Soviet Union--History
Princeton subject headings:
Strikes and lockouts--Russia--History--20th century.
Strikes and lockouts--Soviet Union--History.
Working class--Russia--History--20th century.
Working class--Soviet Union--History.