Columbia subject headings:
Harvard subject headings:
Freud, Sigmund, 1856-1939
Nietzsche, Friedrich Wilhelm, 1844-1900--Influence.
Psychoanalysis--History
Schopenhauer, Arthur, 1788-1860--Influence.
Subconsciousness--History.
Princeton subject headings:
Freud, Sigmund, 1856-1939.
Nietzsche, Friedrich Wilhelm, 1844-1900--Influence.
Schopenhauer, Arthur, 1788-1860--Influence.