Columbia subject headings:
Harvard subject headings:
Brecht, Bertolt, 1898-1956--Criticism and interpretation.
Germany--History--Revolution, 1918--Literature and the revolution.
Princeton subject headings:
Brecht, Bertolt, 1898-1956--Criticism and interpretation.
Brecht, Bertolt, 1898-1956--Political and social views.
Political plays, German--History and criticism.
Politics and literature--Germany--History--20th century.