Columbia subject headings:
Communism.
Revolutions--Soviet Union.
Revolutions.
Soviet Union--History--Revolution, 1917-1921--Influence.
Soviet Union--Politics and government.
Harvard subject headings:
Communism.
Revolutions
Revolutions--Russia.
Revolutions--Soviet Union.
Russia--History--February Revolution, 1917--Influence.
Russia--History--Revolution, 1905-1907--Influence.
Soviet Union--History--Revolution, 1917-1921--Influence.
Soviet Union--Politics and government.
Princeton subject headings:
Kommunisticheskai︠a︡ partii︠a︡ Sovetskogo Soi︠u︡za--Party work.
Revolutions--Soviet Union.
Soviet Union--History.