Columbia subject headings:
Harvard subject headings:
Communism--History--Congresses.
Lenin, Vladimir Ilʹich, 1870-1924--Congresses.
Marxian economics--Congresses.
Political science--Philosophy--Congresses
Socialism--Congresses
World politics--Congresses
Princeton subject headings:
Communism--History--Congresses.
Lenin, Vladimir Ilʹich, 1870-1924--Congresses.
Marxian economics--Congresses.
Political science--Philosophy--Congresses.
Socialism--Congresses.
World politics--Congresses.