Langley , Graham. <br/><br/>
Telecommunications primer : systems and applications 

 - Delhi :  Galgotia Publisher,  1994 
 - 283. 
<br/><br/><label>ISBN: </label>8175150637  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Applied physics
<br/><br/><label>Dewey Class. No.: </label>621.383  / LAN