Columbia subject headings:
Harvard subject headings:
Brecht, Bertolt, 1898-1956--Criticism and interpretation.
Devotional literature, German.
German poetry--20th century
Princeton subject headings:
Brecht, Bertolt, 1898-1956--Criticism and interpretation.
German poetry--20th century--History and criticism.
Luther, Martin, 1483-1546--Influence.