Simon Singh <br/><br/>
The Code Book: The Secret History of Codes and Code - Breaking 

 - 
 -  Harper Collins   
 - 
 -   .
<br/><br/>  
<br/><br/><label>ISBN: </label>9780007453085 
<br/><br/><label>LCCN: </label>
<br/><br/><label>Subjects--Personal Names: </label><br/>
<br/><br/><label>Subjects--Corporate Names: </label><br/>
<br/><br/><label>Subjects--Meeting Names: </label><br/>
<br/><br/><label>Subjects--Uniform Titles: </label><br/>
<br/><br/><label>Subjects--Topical Terms: </label><br/>
<br/><br/><label>Subjects--Geographic Terms: </label><br/>
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>
<br/><br/><label>Dewey Class. No.: </label> /