Halsall,Fred <br/><br/>
DATA COMMUNICATIONS, COMPUTER NETWORKS AND OPEN SYSTEMS 

 - 4th 
 - NEW DELHI  PEARSON EDUCATION  2003 
 - XVI,907 p. 
 -  - .
<br/><br/><label>ISBN: </label>8178080982 
<br/><br/><label>Dewey Class. No.: </label>004.6