fred halsall <br/><br/>
data communications computer networks and open systems 

 - 4 
 -  pearson  2003 
 - 907 
<br/><br/><label>ISBN: </label>81-7808-098-2 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>computer network<br/>computer network
<br/><br/><label>Dewey Class. No.: </label>4.6