Columbia subject headings:
German drama--History and criticism--Congresses.
War in literature--Congresses.
Harvard subject headings:
Brecht, Bertolt, 1898-1956--Criticism and interpretation--Congresses.
Brecht, Bertolt, 1898-1956. Fatzer--Congresses.
War in literature--Congresses.
Princeton subject headings:
German drama--History and criticism--Congresses.
War in literature--Congresses.