Columbia subject headings:
Communism and philosophy.
Dialectical materialism.
Lenin, Vladimir Ilʹich, 1870-1924.
Harvard subject headings:
Communism and philosophy.
Dialectical materialism.
Lenin, Vladimir Ilʹich, 1870-1924
Princeton subject headings:
Dialectical materialism.
Lenin, Vladimir Ilʹich, 1870-1924.