Singh, Simon <br/><br/>
The Code Book  The Secret History Of Codes & Code-Breaking 
Simon Singh 
 - London :  Fourth Estate,  c1999. 
 - xiii, 402 p.:  [153] 
<br/><br/>This book is having appendix 
<br/><br/><label>ISBN: </label>9780007453085 
<br/><br/><label>Dewey Class. No.: </label>652.8  / SIN/COD