Columbia subject headings:
Harvard subject headings:
Germany--Politics and government--1933-1945.
Jews--Germany--History--1933-1945.
Poland--History--Occupation, 1939-1945
World War, 1939-1945--Concentration camps.
Princeton subject headings:
Germany--Politics and government--1933-1945.
Jews--Germany--History--1933-1945.
Poland--History--Occupation, 1939-1945.
World War, 1939-1945--Concentration camps.