Brennan, Herbie, <br/><br/>
The Codebreaker's Handbook : 

 -  Faber & Faber,  2006. 
 - 144 pages 
<br/><br/><label>ISBN: </label>9780571224616 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cryptography.
<br/><br/><label>Dewey Class. No.: </label>652.8  / BRE