Columbia subject headings:
Crimes against humanity--History--20th century--Congresses.
Genocide--History--20th century--Congresses.
Good and evil--Congresses.
Holocaust, Jewish (1939-1945)--Moral and ethical aspects--Congresses.
Memory (Philosophy)--Congresses.
Harvard subject headings:
Armenian Genocide, 1915-1923--Moral and ethical aspects--Congresses.
Genocide--Moral and ethical aspects--Congresses.
Good and evil--Congresses
Holocaust, Jewish (1939-1945)--Moral and ethical aspects--Congresses.
Levi, Primo, 1919-1987--Congresses.
Suffering--Moral and ethical aspects--Congresses.
Princeton subject headings:
Crimes against humanity--History--20th century--Congresses.
Genocide--History--20th century--Congresses.
Good and evil--Congresses.
Holocaust, Jewish (1939-1945)--Moral and ethical aspects--Congresses.
Memory (Philosophy)--Congresses.