The Doomsday Key: A SIGMA...
James Rollins
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The Last Twelve Miles
Erika Robuck
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The Eye of God
James Rollins
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The Mathematics of Secrets:...
Joshua Holden
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Secret Language: Codes,...
Barry J Blake
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The Devil Colony: A SIGMA...
James Rollins
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Codes, Ciphers and Secret...
Martin Gardner
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Unsolved!: The History and...
Craig P Bauer
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A Desperate Fortune
Susanna Kearsley
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Enigma: The Battle for the...
Hugh Sebag-Montefiore
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The Hunt for the Missing Spy
Penny Warner
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The Essential Turing: Seminal...
Alan Mathison Turing,
B Jack Copeland (Editor)
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Secret History: The Story of...
Craig P Bauer
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The Lovecraft Code
Peter Levenda
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Elementary Cryptanalysis
Abraham Sinkov,
Todd Feil (Translator)
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Code Cracking for Kids:...
Jean Daigneau
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The Mummy's Curse
Penny Warner
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How We Think: Digital Media...
N Katherine Hayles
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The Secret Cipher
Whitaker Ringwald
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The Haunted Lighthouse
Penny Warner
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The Secret of the Skeleton Key
Penny Warner
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Codes and Ciphers: Julius...
Robert Churchhouse
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Mathematical Recreations and...
W W Rouse 1850-1925 Ball
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Cryptanalysis : a study of...
Helen Fouché Gaines
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