Columbia subject headings:
Harvard subject headings:
Eugenics
Eugenics--Germany--History--20th century
National socialism and science.
Psychiatrists--Germany--Biography
Rudin, Ernst.
Rüdin, Ernst, 1874-1952.
Princeton subject headings:
Eugenics--Germany--History--20th century.
Geneticists--Germany--Biography.
Rüdin, Ernst, 1874-1952.