Shay, William A. <br/><br/>
Understanding data communications and networks / 
William A. Shay 
 - 3rd ed. 
 - Hyderabad :  BS Publications,  2010 
 - xxvi, 766 p. :  ill. ;  24 cm. 
<br/><br/>Includes glossary Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9788178001791 (pbk.)  Rs.450.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data transmission systems<br/>Computer networks
<br/><br/><label>Dewey Class. No.: </label>004.6