Columbia subject headings:
Harvard subject headings:
Koeppen, Wolfgang, 1906-1996--Criticism and interpretation.
Koeppen, Wolfgang, 1906-1996--Political and social views.
Koeppen, Wolfgang, 1906-1996. Tauben im Gras.
Koeppen, Wolfgang, 1906-1996. Treibhaus.
Princeton subject headings:
Koeppen, Wolfgang, 1906-1996--Criticism and interpretation.
Koeppen, Wolfgang, 1906-1996--Political and social views.
Koeppen, Wolfgang, 1906-1996. Tauben im Gras.
Koeppen, Wolfgang, 1906-1996. Treibhaus.