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The Eye of God
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The Cryptos Conundrum
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The Doomsday Key: A SIGMA...
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How I Became a Spy: A Mystery...
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Codes, Ciphers and Secret...
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The Mathematics of Secrets:...
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The Mysterious Code
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Mr. Summerling's Secret Code ...
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Enigma: The Battle for the...
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The Essential Turing: Seminal...
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Unsolved!: The History and...
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The Secret Cipher
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Code Cracking for Kids:...
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Dunwich
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Eddie Red: Undercover: Doom...
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Every Wicked Man
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Secret History: The Story of...
Craig P Bauer
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Lorenz: Breaking Hitler's Top...
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The Hunt for the Missing Spy
Penny Warner
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The Lovecraft Code
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A Desperate Fortune
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Cryptanalysis : a study of...
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