Columbia subject headings:
Dürrenmatt, Friedrich--Criticism and interpretation.
Frisch, Max, 1911-1991--Criticism and interpretation.
Swiss literature (German)--20th century--History and criticism.
Harvard subject headings:
Dürrenmatt, Friedrich--Criticism and interpretation.
Frisch, Max, 1911-1991--Criticism and interpretation.
Swiss literature (German)--20th century--History and criticism.
Princeton subject headings:
Dürrenmatt, Friedrich--Criticism and interpretation.
Frisch, Max, 1911---Criticism and interpretation.
Swiss literature (German)--20th century--History and criticism.