Columbia subject headings:
Cognition--Philosophy.
Developmental psychology--Philosophy.
Freud, Sigmund, 1856-1939.
Harvard subject headings:
Cognition--Philosophy.
Developmental psychology--Philosophy.
Freud, Sigmund, 1856-1939
Princeton subject headings:
Cognition--Philosophy.
Developmental psychology--Philosophy.
Freud, Sigmund, 1856-1939.