Denning, Dorothy Elizabeth Robling <br/><br/>
Cryptography and data security   
by Dorothy Elizabeth Robling Denning 
 - Reading  Addison-Wesley Pub.  1982 
 - xiii, 400p 
<br/><br/><label>ISBN: </label>0201101505 
<br/><br/><label>Dewey Class. No.: </label>001.64028  / N82