Dawson Ed Ed. <br/><br/>
Cryptography    Policy and algorithms. 
Dawson Ed Ed.; Golic Jovan Ed. 
 -  1996 
<br/><br/><label>Standard No.: </label>76229 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>D6,8(B),942, N6