Columbia subject headings:
Harvard subject headings:
Communism--Soviet Union
Rossiiskaia sotsial-demokraticheskaia rabochaia partiia (bolʹshevikov)
Soviet Union--History--Revolution, 1917-1921--Historiography.
Soviet Union--History--Revolution, 1917-1921.
Soviet Union--Politics and government--1917-1936.
Trotsky, Leon, 1879-1940
Princeton subject headings:
Communism--Soviet Union.
Soviet Union--History--Revolution, 1917-1921--Historiography.
Soviet Union--Politics and government--1917-1936.
Trotsky, Leon, 1879-1940.