Columbia subject headings:
World War, 1939-1945--Concentration camps.
World War, 1939-1945--Prisoners and prisons, German.
Harvard subject headings:
Concentration camp inmates.
Concentration camps--Europe--History.
Prisoners of war--Poland
World War, 1939-1945--Concentration camps.
World War, 1939-1945--Prisoners and prisons, German.
World War, 1939-1945--Prisoners and prisons, Polish.
Princeton subject headings:
Nazi concentration camp inmates.
Nazi concentration camps--Europe--History.
Prisoners of war--Poland.
World War, 1939-1945--Concentration camps.
World War, 1939-1945--Prisoners and prisons, German.
World War, 1939-1945--Prisoners and prisons, Polish.