Title: The real Enigma heroes
First published: 2008
Subjects: World War, 1939-1945, Cryptography, Enigma cipher system, Biography, Sailors, Heroes, Submarines (Ships), History, Naval operations, Military biography, World war, 1939-1945, secret service, great britain, Secret service, Electronic intelligence, British Personal narratives
LC classification: D810.C88 S53 2008