Columbia subject headings:
Harvard subject headings:
Auschwitz (Concentration camp)--History.
National socialism
Romanies--Germany--Biography.
Romanies--Germany--History.
Romanies--Nazi persecution--Germany
World War, 1939-1945--Atrocities
Princeton subject headings:
Romanies--Germany--History--18th century.
Romanies--Germany--History--20th century.