Title: The secret capture /
Authors: Roskill, S. W. 1903-1982.
Publisher: Naval Institute Press,
Year: 2011
Subjects: U 110 (Submarine); World War, 1939-1945 Naval operations, British.; World War, 1939-1945 Naval operations Submarine.; World War, 1939-1945 Cryptography.; World War, 1939-1945 Electronic intelligence Great Britain.; World War, 1939-1945 Electronic intelligence Germany.; ULTRA (Intelligence system)