Columbia subject headings:
Harvard subject headings:
Luxemburg, Rosa, 1871-1919--Appreciation--Poland--Congresses.
Luxemburg, Rosa, 1871-1919--Political and social views--Congresses.
Women communists--Germany--Biography--Congresses.
Women revolutionaries--Germany--Biography--Congresses.
Women socialists--Germany--Biography--Congresses.
Princeton subject headings:
Luxemburg, Rosa, 1871-1919--Influence--Congresses.