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Codes, Ciphers and Secret Writing - Dover Children's Activity Books Martin Gardner
Codes, Ciphers and Secret Writing - Dover Children's Activity Books
Martin Gardner
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.
96 pages, 45 diagrams
| Media | Books Paperback Book (Book with soft cover and glued back) |
| Released | March 28, 2003 |
| ISBN13 | 9780486247618 |
| Publishers | Dover Publications Inc. |
| Pages | 96 |
| Dimensions | 137 × 216 × 6 mm · 128 g |
| Language | English |
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