Green D.C. <br/><br/>
Data Communication 

 - 2nd 
 - England  Longman  1995 
 - 216p 
<br/><br/><label>ISBN: </label>0582245206 
<br/><br/><label>LCCN: </label>nam a22     7a 4500 
<br/><br/><label>Dewey Class. No.: </label>004.6/GRE/1995