Columbia subject headings:
Harvard subject headings:
Kommunisticheskai︠a︡ partii︠a︡ Sovetskogo Soi︠u︡za.
Labor--Russia (Federation)
Soviet Union--History--Revolution, 1917-1921.
Working class--Russia
Princeton subject headings:
Kommunisticheskai︠a︡ partii︠a︡ Sovetskogo Soi︠u︡za.
Labor--Russia (Federation).
Soviet Union--History--Revolution, 1917-1921.
Working class--Russia.