Mel, H X <br/><br/>
Cryptography decrypted 

 - London:   Addison-Wesley,   2001 
 - xx, 352p.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer
<br/><br/><label>Subjects--Index Terms: </label>Public 
<br/><br/><label>Universal Decimal Class. No.: </label>D 681.324.004.4  / P1