Columbia subject headings:
Dürrenmatt, Friedrich--Criticism and interpretation.
Frisch, Max, 1911-1991--Criticism and interpretation.
Harvard subject headings:
Aesthetics in literature.
Dürrenmatt, Friedrich--Aesthetics.
Dürrenmatt, Friedrich--Political and social views.
Frisch, Max, 1911-1991--Aesthetics.
Frisch, Max, 1911-1991--Political and social views.
Politics in literature.
Princeton subject headings:
Dürrenmatt, Friedrich--Criticism and interpretation.
Frisch, Max, 1911-1991--Criticism and interpretation.