Columbia subject headings:
Harvard subject headings:
Cocaine--Research--History--19th century.
Freud, Sigmund, 1856-1939
Morphine--Research--History--19th century.
Psychoanalysis--History--19th century.
Psychoanalysts--Austria--Biography
Psychotherapy--History--19th century.
Princeton subject headings:
Cocaine--Therapeutic use--History.
Drug addicts--History.
Freud, Sigmund, 1856-1939.
Morphine abuse--History.