Columbia subject headings:
Harvard subject headings:
Gerlach, Hellmut von, 1866-1935--Congresses.
Germany--Politics and government--1871-1933--Congresses.
Journalists--Germany--Biography--Congresses.
Pacifists--Germany--Biography--Congresses.
Princeton subject headings:
Gerlach, Hellmut von, 1866-1935--Congresses.
Germany--Politics and government--1871-1933--Congresses.
Journalists--Germany--Biography--Congresses.
Pacifists--Germany--Biography--Congresses.