Columbia subject headings:
Communism--Soviet Union--History.
Moscow (Russia)--History--1917-1921.
Moscow (Russia)--Politics and government.
Soviet Union--History--Revolution, 1917-1921.
Harvard subject headings:
Communism--Soviet Union--History
Moscow (Russia)--History--1917-1921.
Moscow (Russia)--Politics and government.
Soviet Union--History--Revolution, 1917-1921.
Princeton subject headings:
Communism--Soviet Union--History.
Moscow (Russia)--History--1917-1921.
Moscow (Russia)--Politics and government.
Soviet Union--History--Revolution, 1917-1921.