Columbia subject headings:
Harvard subject headings:
Communists--Ukraine.
Lenin, Vladimir Ilʹich, 1870-1924--Friends and associates.
Ukraine--History--Revolution, 1917-1921.
Princeton subject headings:
Communists--Ukraine.
Lenin, Vladimir Ilʹich, 1870-1924--Friends and associates.
Ukraine--History--Revolution, 1917-1921.