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Crack the code : the history of spy codes & ciphers
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Crack the code : the history of spy codes & ciphers
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Learn about the different types of code which have been used to relay secret messages over the years, and how they have been cracked.
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Authors
McDonald, C. J.
Subjects
Cryptography.
Ciphers.
Espionage.
Spies.
Language
English
Dimensions
22 x 28 cm.