Ponnappa, B M <br/><br/>
Information Security and Technology :  / 
B M Ponnappa. 
 - New Delhi :  Manas Publications,  2004. 
 - 447 p. ;  ill.  23 cm. 
<br/><br/><label>ISBN: </label>8170491789 
<br/><br/><label>Dewey Class. No.: </label>658.478 PON