Columbia subject headings:
Communism--Soviet Union--History--20th century.
Soviet Union--Politics and government--1917-1936.
Harvard subject headings:
Kommunisticheskai͡a partii͡a Sovetskogo Soi͡uza--History.
Soviet Union--Politics and government--1917-1936.
Princeton subject headings:
Communism--Soviet Union--History--20th century.
Dialectical materialism.
Soviet Union--Politics and government--1917-1936.