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by Elizabeth James
This clever guide teaches children the art and science of keeping secrets through the fascinating world of codes and ciphers. Young readers will discover practical methods for protecting information, from simple substitution codes to more complex cryptographic techniques, while learning when and how to responsibly keep secrets. It's the perfect book for curious minds who love puzzles, logic, and the thrill of hidden messages.
Yearling
56
9780688518288
1978-01-01
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