| Entry Text: | KAHN, David. Seizing the Enigma: The Race to Break the German U-Boat Codes, 1939–1943. xii, 337p., bibliog., illus., index. London: Souvenir; New York: Houghton Mifflin, 1991. ISBN: 0285630660.
The best and fullest account of the influence of ULTRA on naval operations. |
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