Columbia subject headings:
Brecht, Bertolt, 1898-1956--Criticism and interpretation.
Harvard subject headings:
Brecht, Bertolt, 1898-1956--Criticism and interpretation.
Princeton subject headings:
Brecht, Bertolt, 1898-1956--Criticism and interpretation.
Brecht, Bertolt, 1898-1956--Political and social views.