Columbia subject headings:
Euthanasia--Germany.
National socialism and medicine.
Physicians--Germany.
Trials (Euthanasia)--Germany.
War crime trials--Germany.
Harvard subject headings:
Aktion T4 (Germany)
Euthanasia--Germany--History--20th century
Human experimentation in medicine--Germany--History--20th century
Medical ethics--Germany--History--20th century
National socialism--Moral and ethical aspects.
War crime trials--Germany
World War, 1939-1945--Atrocities.
Princeton subject headings:
Euthanasia--Germany--History--20th century.
Human experimentation in medicine--Germany--History--20th century.
Medical ethics--Germany--History--20th century.
National socialism--Moral and ethical aspects.
War crime trials--Germany.
World War, 1939-1945--Atrocities.