Columbia subject headings:
Romani Genocide, 1939-1945--Europe.
Romani Genocide, 1939-1945.
Romanies--Europe--History--20th century.
World War, 1939-1945--Atrocities.
World War, 1939-1945--Prisoners and prisons, German.
Harvard subject headings:
Romani Genocide, 1939-1945
Romanies--Europe--History--20th century.
World War, 1939-1945--Atrocities.
World War, 1939-1945--Prisoners and prisons, German.
World War, 1939-1945--Romanies--Europe.
Princeton subject headings:
Romani Genocide, 1939-1945.
Romanies--Europe--History--20th century.
World War, 1939-1945--Atrocities.
World War, 1939-1945--Europe--Romanies.
World War, 1939-1945--Prisoners and prisons, German.