Comer, Douglas E. <br/><br/>
Computer networks and internets:  with internet applications/ 
Douglas E. Comer. 
 - third edition 
 - Upper Saddle River, N.J.:   Prentice Hall,   c2001.  
 - xxix, 683 pages :   illustrations ;   24 cm. 
<br/><br/>Includes bibliographical references and index.<br/>