321 pages
English language
Published Feb. 21, 2001 by Oxford University Press.
Subjects
- World War, 1939-1945 -- Cryptography
- World War, 1939-1945 -- Secret service -- Great Britain
- World War, 1939-1945 -- Electronic intelligence -- Great Britain
321 pages
English language
Published Feb. 21, 2001 by Oxford University Press.