Columbia subject headings:
Harvard subject headings:
Company unions--Russia (Federation)--Petrograd--History.
Company unions--Russia (Federation)--Saint Petersburg--History.
Factories--Russia (Federation)--Petrograd--History.
Factories--Russia (Federation)--Saint Petersburg--History.
Soviet Union--History--Revolution, 1917-1921.
Working class--Russia (Federation)--Petrograd--History.
Working class--Russia (Federation)--Saint Petersburg--History.
Princeton subject headings:
Company unions--Russia (Federation)--Saint Petersburg--History.
Factories--Russia (Federation)--Saint Petersburg--History.
Labor--Russia (Federation)--Saint Petersburg--History.
Soviet Union--History--Revolution, 1917-1921.
Working class--Russia (Federation)--Saint Petersburg--History.