Columbia subject headings:
Harvard subject headings:
Authors, Russian--20th century.
Gorky, Maksim, 1868-1936--Friends and associates.
Gorky, Maksim, 1868-1936--Influence.
Luxemburg, Rosa, 1871-1919--Friends and associates.
Soviet Union--History--Revolution, 1917-1921.
Women communists--Germany.
Princeton subject headings:
Authors, Russian--20th century.
Gorky, Maksim, 1868-1936--Friends and associates.
Gorky, Maksim, 1868-1936--Influence.
Luxemburg, Rosa, 1871-1919--Friends and associates.
Soviet Union--History--Revolution, 1917-1921.
Women communists--Germany.