Dodd, Annabel. Z. <br/><br/>
The Essential guide to telecommunications 

 - 3rd ed. 
 - Upper saddle river  Prentice hall  2002 
 - xxiv, 500 p. 
<br/><br/><label>ISBN: </label>0-13-064907-4 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Tele communication
<br/><br/><label>Dewey Class. No.: </label>384  / DOD