Columbia subject headings:
Benn, Gottfried, 1886-1956--Criticism and interpretation.
Brecht, Bertolt, 1898-1956--Criticism and interpretation.
Harvard subject headings:
Benn, Gottfried, 1886-1956--Criticism and interpretation.
Brecht, Bertolt, 1898-1956--Criticism and interpretation.
German literature--20th century--History and criticism
German literature--20th century--Themes, motives.
Princeton subject headings:
Benn, Gottfried, 1886-1956--Criticism and interpretation.
Brecht, Bertolt, 1898-1956--Criticism and interpretation.