Columbia subject headings:
Brecht, Bertolt, 1898-1956--Knowledge and learning--Congresses.
Mixed media (Music)
Motion pictures.
Harvard subject headings:
Brecht, Bertolt, 1898-1956--Knowledge--Mixed media (Music)--Congresses.
Brecht, Bertolt, 1898-1956--Knowledge--Motion pictures--Congresses.
Princeton subject headings:
Brecht, Bertolt, 1898-1956--Criticism and interpretation--Congresses.
Brecht, Bertolt, 1898-1956--Knowledge--Motion pictures--Congresses.