Convery, Sean. <br/><br/>
Network security architectures / 
Sean Convery. 
 - New Delhi:  Dorling Kindersley,  2012. 
 - xxxix,739 p. ;  (R14,SH 03) 
<br/><br/> New. 
<br/><br/><label>ISBN: </label>8131770168 (paperback) 9788131770160 (paperback) 
<br/><br/><label>Source: </label> Allied Book  PKR 819.00 
<br/><br/><label>Dewey Class. No.: </label>005.8