Columbia subject headings:
Communism--Soviet Union.
Communist International.
Soviet Union--Economic policy.
Vsesoi︠u︡znai︠a︡ kommunisticheskai︠a︡ partii︠a︡ (bolʹshevikov) (1925-1952)
Harvard subject headings:
Princeton subject headings:
Communism--Soviet Union.
Communism.