Columbia subject headings:
Communism and intellectuals--Soviet Union.
Intellectuals--Political activity--Soviet Union.
Soviet Union--History--Revolution, 1917-1921.
Harvard subject headings:
Communism and intellectuals--Soviet Union.
Intellectuals--Soviet Union--Political activity.
Soviet Union--History--Revolution, 1917-1921.
Princeton subject headings:
Communism and intellectuals--Soviet Union.
Intellectuals--Soviet Union--Political activity.
Soviet Union--History--Revolution, 1917-1921.