Shepherd, Simon J. <br/><br/>
Cryptography  diffusing the confusion 

 - London  Research Studies Press  2001 
 - xiv, 152p. Bibl. Index. 
 - Communications systems   techniques and applications series 5 .
<br/><br/> "Purchased under NBHM grant for the year 2001-2002"   
<br/><br/><label>ISBN: </label>0863802702 
<br/><br/><label>Dewey Class. No.: </label>518.1  / Sh548.CD