Columbia subject headings:
Benn, Gottfried, 1886-1956--Congresses.
Harvard subject headings:
Authors, German--Biography--Congresses.
Benn, Gottfried, 1886-1956--Criticism and interpretation--Congresses.
Physicians--Germany--Biography--Congresses.
Princeton subject headings:
Benn, Gottfried, 1886-1956--Congresses.