Columbia subject headings:
Harvard subject headings:
Communism--Soviet Union--History
Communist revisionism.
Kommunisticheskai︠a︡ partii︠a︡ Sovetskogo Soi︠u︡za--History.
Lenin, Vladimir Ilʹich, 1870-1924
Soviet Union--Politics and government--1917-1936.
Princeton subject headings:
Communism.