Columbia subject headings:
Atrocities--Asia--History--20th century.
Atrocities--Europe--History--20th century.
Holocaust, Jewish (1939-1945)
War crimes--History--20th century.
War--Moral and ethical aspects.
Harvard subject headings:
Atrocities--Asia--History--20th century.
Atrocities--Europe--History--20th century.
Holocaust, Jewish (1939-1945)
War crimes--History--20th century
War--Moral and ethical aspects
Princeton subject headings:
Atrocities--Asia--History--20th century.
Atrocities--Europe--History--20th century.
Holocaust, Jewish (1939-1945)
War crimes--History--20th century.
War--Moral and ethica aspects.