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Codes, Ciphers and Secret Writing (Dover Childrens Activity Books)

Codes, Ciphers and Secret Writing (Dover Childrens Activity Books) by Martin Gardner 0486247619 9780486247618
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Experiment with cryptography the science of secret writing. Cipher and decipher codes: transposition and polyalphabetical ciphers, famous codes, typewriter and telephone codes, codes that use playing cards, knots, and swizzle sticks...even invisible writing and sending messages through outer space. Hours of intrigue and challenge. 45 diagrams.

Author: Martin Gardner

Language: English

Binding: Paperback

Pages: 96

Publisher: Dover Publications

Publication Date: 1984-10-01

Our Price: $3.85


ISBN: 0486247619

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Martin Gardner  Paperback

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