Columbia subject headings:
Harvard subject headings:
Forced labor--Germany--Berlin Region--History--20th century.
Prisons--Germany--Berlin Region--History--20th century.
Weapons industry--Germany--Berlin Region--History--20th century.
World War, 1939-1945--Prisoners and prisons, German.
Princeton subject headings:
Forced labor--Germany--Berlin Region--History--20th century.
Prisons--Germany--Berlin Region--History--20th century.
Weapons industry--Germany--Berlin Region--History--20th century.
World War, 1939-1945--Prisoners and prisons, German.