Columbia subject headings:
Dialectical materialism.
Lenin, Vladimir Ilʹich, 1870-1924.
Marx, Karl, 1818-1883.
Soviet Union--History--Revolution, 1917-1921.
Harvard subject headings:
Communism.
Marx, Karl, 1818-1883
Soviet Union--History--Revolution, 1917-1921.
Princeton subject headings:
Communism.
Marx, Karl, 1818-1883.
Soviet Union--History--Revolution, 1917-1921.