Columbia subject headings:
Anti-Nazi movement.
Canaris, Wilhelm, 1887-1945.
World War, 1939-1945--Secret service--Germany.
Harvard subject headings:
Anti-Nazi movement
Canaris, Wilhelm, 1887-1945.
World War, 1939-1945--Secret service--Germany.
Princeton subject headings:
Anti-Nazi movement.
Canaris, Wilhelm, 1887-1945.
World War, 1939-1945--Secret service--Germany.