Comer, Douglas E.  c2004. <br/><br/>
Computer Networks and Internets:  with Internet Application/ 
Douglas E. Comer and M.S. Narayanan. 
 - 4th ed. 
 - New Delhi:  Pearson,  c2004. 
 - xxv,271p.;  ill.;  25cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>9788177589276 
<br/><br/><label>LC Class. No.: </label>TK 105.5  / .C59 2004