Codes, Ciphers and Secret Writing【送料無料】 | |
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CODES CIPHERS & SECRET WRITING Test Your Code Breaking Skills Martin Gardner DOVER PUBN INC1984 Paperback English ISBN：9780486247618 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. 洋書 Reference & Language（辞典＆語学） Reference
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