Columbia subject headings:
Rossiĭskai︠a︡ sot︠s︡ial-demokraticheskai︠a︡ rabochai︠a︡ partii︠a︡ (bolʹshevikov)
Soviet Union--History--Revolution, 1917-1921.
Harvard subject headings:
Communism--Russia--History--20th century.
Communism--Soviet Union--History
Russia--Politics and government--1894-1917.
Princeton subject headings:
Rossiĭskai︠a︡ sot︠s︡ial-demokraticheskai︠a︡ rabochai︠a︡ partii︠a︡ (bolʹshevikov)
Soviet Union--History--Revolution, 1917-1921.