Shay, William A. <br/><br/>
Understanding data communications and networks / 
William A. Shay. 
 - Third Edition 
 - Australia ;  Belmont, Calif. :  Thomson Brooks/Cole,  c2004. 
 - xxv, 766 pages :  illustrations ;  25 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0-534-38317-3 
<br/><br/><label>LCCN: </label>2003109625 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data transmission systems.<br/>Computer networks.
<br/><br/><label>LC Class. No.: </label>TK5105  / .S49 2004 
<br/><br/><label>Dewey Class. No.: </label>DC 004.622  / Sh2u