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The Mammoth Book of Secret Code Puzzles
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Barnes and Noble
The Mammoth Book of Secret Code Puzzles
Current price: $35.99
Barnes and Noble
The Mammoth Book of Secret Code Puzzles
Current price: $35.99
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This text presents a collection of cryptograms & other enciphered challenges to satisfy various levels of puzzle aficionado. It features over 600 puzzles, from the simple substitution-code type - where each letter stands for another - to difficult ciphers using actual wartime methods employed by historic figures.
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