Columbia subject headings:
Freud, Sigmund, 1856-1939.
Kafka, Franz, 1883-1924.
Nietzsche, Friedrich Wilhelm, 1844-1900.
Harvard subject headings:
Freud, Sigmund, 1856-1939
Kafka, Franz, 1883-1924
Modernism (Literature)
Nietzsche, Friedrich Wilhelm, 1844-1900
Philosophy, Modern.
Princeton subject headings: