Ryder, John D. <br/><br/>
Networks lines and fields 
by John D.Ryder 
 - 2nd 
 - New Delhi  Prentice-Hall  1999 
 - xi,593 
<br/><br/><label>ISBN: </label>8120302990 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication<br/>Telephone
<br/><br/><label>Dewey Class. No.: </label>621.3851  / RYD N9