Columbia subject headings:
Euthanasia--Germany.
Historiography--Germany.
Jews--Persecutions--Germany.
National socialism--Psychological aspects.
National socialism.
Romanies--Germany--History.
Harvard subject headings:
Euthanasia--Germany.
Historiography--Germany
Jews--Persecutions--Germany.
National socialism--Psychological aspects.
National socialism.
Romanies--Germany--History.
Princeton subject headings:
Euthanasia--Germany.
Historiography--Germany.
Jews--Persecutions--Germany.
National socialism--Germany.
National socialism--Psychological aspects.
Romanies--Germany--History.