Panko, Raymond. <br/><br/>
Business data networks and telecommunications 

 - 4th edition. 
 - New Delhi :  Prentice Hall Of India,  1994 
 - 510. 
<br/><br/><label>ISBN: </label>8120327715  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data processing computer science
<br/><br/><label>Dewey Class. No.: </label>004.678  / PAN