bookshelves

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cover title author avg rating rating my rating date read date added Down_arrow
 
Codes and Ciphers: Secret Writing through the Ages
3.36
Apr 2014
Apr 01, 2014
 
The Ultra Secret
3.83
Jan 1989
May 24, 2012
 
Kahn on Codes: Secrets of the New Cryptology
4.09
Jan 1989
May 28, 2011
 
The Spy's Guide: Office Espionage
3.32
Jan 2008
Oct 14, 2010
 
Encyclopedia Brown's Book of Wacky Spies (Encyclopedia Brown Books)
3.67
Jan 1984
Sep 10, 2010
 
Spy
4.00
Feb 2010
Jul 02, 2010
 
The Man Who Broke Purple: The Life of the World's Greatest Cryptologist, William F. Friedman
4.00
Jan 1989
Apr 11, 2010
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