Columbia subject headings:
Harvard subject headings:
Psychiatry--Germany--Heidelberg--History.
Psychotherapy--Germany--Heidelberg--History.
Socialism--Germany--Heidelberg--History.
Sozialistisches Patientenkollektiv--History.
Princeton subject headings:
Psychiatry--Germany--Heidelberg--History.
Psychotherapy--Germany--Heidelberg--History.
Socialism--Germany--Heidelberg--History.
Sozialistisches Patientenkollektiv--History.