Columbia subject headings:
Harvard subject headings:
Anti-Nazi movement--Germany
Dora (Concentration camp)
World War, 1939-1945--Prisoners and prisons, German.
Princeton subject headings:
Anti-Nazi movement--Germany--History--Sources.
Dora (Concentration camp)--History--Sources.
World War, 1939-1945--Prisoners and prisons, German--History--Sources.