Columbia subject headings:
Communist parties.
Labor movement.
Labor.
Lenin, Vladimir Ilʹich, 1870-1924.
Working class.
Harvard subject headings:
Communist parties.
Labor
Lenin, Vladimir Ilʹich, 1870-1924
Working class
Princeton subject headings:
Communist parties.
Labor.
Lenin, Vladimir Ilʹich, 1870-1924.
Working class.