KAUFMAN,C <br/><br/>
NETWORK SECURITY PRIVATE COMMUNICATION IN APUBLIC WORLD 

 - LONDON  Prentice Hall  1995 
 - 505p.,24X18cms. 
<br/><br/><label>ISBN: </label>0130614661 
<br/><br/><label>Dewey Class. No.: </label>621.381 954 04