Columbia subject headings:
Harvard subject headings:
Authors, German--20th century--Biography--Congresses.
Brecht, Bertolt, 1898-1956--Criticism and interpretation--Congresses.
Brecht, Bertolt, 1898-1956--Friends and associates--Congresses.
Brecht, Bertolt, 1898-1956--Travel--Soviet Union--Congresses.
Princeton subject headings:
Authors, German--20th century--Biography--Congresses.
Brecht, Bertolt, 1898-1956--Criticism and interpretation--Congresses.
Brecht, Bertolt, 1898-1956--Friends and associates--Congresses.
Brecht, Bertolt, 1898-1956--Travel--Soviet Union--Congresses.