Black, Uyless D. <br/><br/>
Data networks :  concepts,theory and practice / 
Uyless D. Black. 
 - London :  Prentice-Hall International,  1989. 
 - xii, 876 p. :  ill., maps ;  24 cm. 
<br/><br/> Includes bibliographical references.   Includes index. 
<br/><br/><label>ISBN: </label>013198599x (pbk. )  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computers<br/>Network