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Codes, Ciphers and Secret Writing (Test Your Code Breaking Skills)
Title: Codes, Ciphers and Secret Writing
(Test Your Code Breaking Skills)
Author: Martin Gardner
Publisher: Dover Publications
Publication Date: 1984-10-01
Number Of Pages: 96
2.2 Mb pdf
ISBN: 0486247619
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..
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Secret Writing Codes Ciphers Martin Gardner Author Martin Mb Pdf Sending Messages Decipher Playing Cards Transposition Cipher Outer Space Intrigue Typewriter Knots Publication Date Science Writing Writing Skills Telephone Codes Code Breaking Swizzle Stick
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