Author: SINGH, SIMON.
Title: The Code Book. The Secret History of Codes & Code-breaking.
Description: London. Fourth Estate, 2000., Paperback reprint. 402 pages. 76 b./w. photographs, diagrams & figures. 27 tables. 20 cm. x 13 cm. Contents near fine, no inscription or marks. Near fine card cover, priced £7.99 on back. ISBN 1857028899. 2000

Keywords: code code-breaking Enigma Bletchley Charles Babbage Zimmermann Clifford Cocks David Deutsch


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