Columbia subject headings:
Darwin, Charles, 1809-1882--Influence.
Freud, Sigmund, 1856-1939.
Harvard subject headings:
Darwin, Charles, 1809-1882--Influence.
Freud, Sigmund, 1856-1939
Princeton subject headings:
Darwin, Charles, 1809-1882--Influence.
Freud, Sigmund, 1856-1939.