Columbia subject headings:
Harvard subject headings:
Communism--Soviet Union
Russia--History--1904-1914.
Russia--Politics and government--1904-1914.
Soviet Union--History--1917-1936.
Soviet Union--Politics and government--1917-1936.
Stalin, Joseph, 1878-1953
Princeton subject headings:
Soviet Union--Politics and government--1936-1953--Sources.