Columbia subject headings:
Harvard subject headings:
Euthanasia--Germany--History--20th century--Congresses.
Holocaust memorials--Europe--Congresses.
Holocaust victims--Europe--Congresses.
Holocaust victims--Germany--Congresses.
Holocaust, Jewish (1939-1945)--Europe--Congresses.
Holocaust, Jewish (1939-1945)--Germany--Congresses.
Medical ethics--Germany--History--20th century--Congresses.
National socialism and medicine--Congresses.
Princeton subject headings:
Euthanasia--Germany--History--Congresses.
Holocaust, Jewish (1939-1945)--Congresses.
National socialism--Congresses.