Columbia subject headings:
Harvard subject headings:
Anarchism--Germany--History--20th century--Congresses.
Anarchists--Germany--Biography--Congresses.
Jewish anarchists--Germany--Biography--Congresses.
Landauer, Gustav, 1870-1919--Congresses.
Princeton subject headings:
Anarchism--History--Congresses.
Jews--Germany--Biography--Congresses.
Landauer, Gustav, 1870-1919--Congresses.