01025cam a2200277 i 4500 113375 20230410105154.0 131002b2006 nyua 000 0 eng 9780521736626 9780521855228 (hbk.) 0521855225 (hbk.) eng D 810 R233d 2006 940.54/8743 Ratcliff, R. A. (Rebecca Ann), 1963- Delusions of intelligence : Enigma, Ultra and the end of secure ciphers / R. A. Ratcliff. Cambridge ; New York : Cambridge University Press, 2006 xvii, 314 p. : ill. ; 24 cm. Enigma cipher system. ULTRA (Intelligence system) World War, 1939-1945 Cryptography. World War, 1939-1945 Electronic intelligence Great Britain World War, 1939-1945 Electronic intelligence Germany. Table of contents only http://www.loc.gov/catdir/toc/ecip065/2005036466.html lcc bk 31482 31482 0 0 lcc 0 0 RR BJB BJB RR 2023-04-10 1 0 D 810 R233d 2006 00000106328 2018-10-23 00:00:00 1 2018-10-23 bk