Graff, Jon C <br/><br/>
Cryptography and E-commerce  a wiley tech brief 

 - New York  John Wiley  2001 
 - xviii,222p.  22cm. PB. 
<br/><br/><label>ISBN: </label>0471405744 
<br/><br/><label>Dewey Class. No.: </label>658.8402854678  / GRA