Columbia subject headings:
Harvard subject headings:
Dürrenmatt, Friedrich--Criticism and interpretation.
Dürrenmatt, Friedrich. Stoffe.
Princeton subject headings:
Dürrenmatt, Friedrich--Criticism and interpretation.
Kant, Immanuel, 1724-1804--Influence.
Knowledge, Theory of.
Vaihinger, Hans, 1852-1933--Influence.