Kahn, David, - SEIZING THE ENIGMA - The Race to Break the German U-Boat Codes, 1939-1943.

Souvenir Press, London, 1992, 1st edn., xii, 337pp, 16pp half tone photo ills., maps/diagrams in text, maps at eps., black cloth lettered in silver at spine, decorated lettered dustwrapper, an account of the secret struggle of the cryptographers at Bletchley Park to break and keep up with the changes in the Enigma code used by Doenitz's U-boats, loosely inserted two colour photographs of Enigma machines, edges tanned, dustwrapper: price clipped, lightly rubbed at tips, very good plus in a very good plus dustwrapper,

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