Andreassen, Karl <br/><br/>
Computer cryptology : beyond decoder rings /  
Karl Andreassen, Kathryn Gollin Marshak. 
 - 268 ;  24 cm. 
<br/><br/><label>ISBN: </label>0131661337 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Management
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Cryptography.<br/>Cipher systems.<br/>Computer security.<br/>Computers.
<br/><br/><label>Dewey Class. No.: </label>652.80285  / A557