Cover of Secrets With Ciphers and Codes,

Secrets With Ciphers and Codes,

by Unknown Author

32 pages1972AtheneumISBN 9780020449706
Children's
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About this book

Introduces ten encoding methods using numbers, rearranged letters, colored squares and dots, and other systems. Provides a message to decipher with each method.

Publication Details

Publisher
Atheneum
Published
1972
Pages
32
ISBN
9780020449706
Language
en

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