Columbia subject headings:
Germany--Ethnic relations.
Romani Genocide, 1939-1945.
Romanies--Germany--History--20th century.
World War, 1939-1945--Atrocities.
Harvard subject headings:
Bremen Region (Germany)--Ethnic relations.
Romanies--Germany--Bremen Region.
World War, 1939-1945--Atrocities.
Princeton subject headings:
Bremen Region (Germany)--Ethnic relations.
Romanies--Germany--Bremen Region.
World War, 1939-1945--Atrocities.