ISBN:

• 9781845135393
• 1845135393

Description: vi, 336 pages, 8 unnumbered pages of plates : illustrations ; 24 cm

Notes: Includes bibliographical references (pages 323-329) and index.

Control Number: 753322

Subjects:

• Bletchley Park (Milton Keynes, England) -- History.
• Cryptography.
• Government Code and Cypher School (Great Britain) -- History.
• World War, 1939-1945 -- Cryptography.
• World War, 1939-1945 -- Electronic intelligence -- Great Britain.