Columbia subject headings:
Harvard subject headings:
Euthanasia--Germany--Exhibitions.
Euthanasia--Moral and ethical aspects--Exhibitions.
Germany--Politics and government--1933-1945--Exhibitions.
Germany--Social policy--20th century--Exhibitions.
National socialism--Exhibitions.
Princeton subject headings:
Euthanasia--Germany--History--20th century.
Medical ethics--Germany.
National socialism and medicine.
National socialism--Moral and ethical aspects.