Duck, Michael. <br/><br/>
Data communications for engineers / 
Michael Duck, Peter Bishop and Richard Read. 
 - Harlow :  Addison-Wesley Pub. Co.,  c1996. 
 - xiii, 270 p. :  ill. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0201427885 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data transmission systems.<br/>Computer networks.