General Book Search for "9780486247618"

Codes, Ciphers and Secret Writing

Paperback
Published : Friday 28 March 2003
ISBN : 9780486247618
Price : €5.84


Description

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 space. 45 diagrams.



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