Columbia subject headings:
Nazi concentration camps--Germany.
Harvard subject headings:
Communists--Germany--Biography
Hüttner, Jonny
Nazi concentration camps--Germany
Political prisoners--Germany--Biography
Rote Sprachrohr (Group)
World War, 1939-1945--Prisoners and prisons, German
Princeton subject headings:
Communists--Germany--Biography.
Hüttner, Jonny.
Political prisoners--Germany--Biography.
Rote Sprachrohr (Group)
World War, 1939-1945--Prisoners and prisons, German.