Columbia subject headings:
Harvard subject headings:
Anti-Nazi movement--Germany
Political persecution--Germany--History.
Political prisoners--Germany
World War, 1939-1945--Prisoners and prisons, German--History.
Princeton subject headings:
Anti-Nazi movement--Germany.
Political persecution--Germany--History.
Political prisoners--Germany.
World War, 1939-1945--Prisoners and prisons, German--History.