Columbia subject headings:
Harvard subject headings:
Brecht, Bertolt, 1898-1956--Criticism and interpretation.
Communism in literature.
Ethics in literature.
German drama--20th century--History and criticism.
Princeton subject headings:
Brecht, Bertolt, 1898-1956--Criticism and interpretation.
Communism in literature.
Ethics in literature.
German drama--20th century--History and criticism.