Columbia subject headings:
Communism--History.
Communism--Soviet Union.
Lenin, Vladimir Ilʹich, 1870-1924.
Social conflict.
Harvard subject headings:
Communism--History
Communism--Soviet Union
Lenin, Vladimir Ilʹich, 1870-1924
Social conflict.
Princeton subject headings:
Communism--History.
Communism--Soviet Union.
Lenin, Vladimir Ilʹich, 1870-1924.
Social conflict.