Columbia subject headings:
Jews--Germany--Biography.
Kauder, Richard.
Spies--Germany--Biography.
World War, 1939-1945--Secret service--Germany.
Harvard subject headings:
Princeton subject headings:
Espionage.
Kauder, Richard.
Spies--Germany--Biography.
World War, 1939-1945--Jews.
World War, 1939-1945--Secret service--Germany.