Columbia subject headings:
Political prisoners--Germany.
Prisoners of war--Germany.
World War, 1939-1945--Prisoners and prisons.
Harvard subject headings:
National socialism.
Political prisoners--Germany--History--20th century.
Prisoners of war--Germany--History--20th century
World War, 1939-1945--Prisoners and prisons, German.
Princeton subject headings:
Political prisoners--Germany.
Prisoners of war--Germany.
World War, 1939-1945--Prisoners and prisons.