Columbia subject headings:
Harvard subject headings:
Romanies--History--20th century.
Romanies--Nazi persecution--Germany
World War, 1939-1945--Atrocities.
World War, 1939-1945--Concentration camps--Germany.
Princeton subject headings:
National socialism.
Romani Genocide, 1939-1945.
Romanies--Germany--History.
World War, 1939-1945--Atrocities.