Columbia subject headings:
Communist revisionism.
Kommunisticheskai͡a partii͡a Sovetskogo Soi͡uza--History.
Trotsky, Leon, 1879-1940.
Harvard subject headings:
Communist revisionism.
Kommunisticheskai︠a︡ partii︠a︡ Sovetskogo Soi︠u︡za--History.
Trotsky, Leon, 1879-1940
Princeton subject headings: