Green  <br/><br/>
Data Comminication 

 - 2nd 
 - London  PEARSON   1995 
<br/><br/><label>ISBN: </label>0582245206 
<br/><br/><label>LC Class. No.: </label>001.644  / 3 
<br/><br/><label>Dewey Class. No.: </label>001.644  / 3