Langley, Graham <br/><br/>
Telecommunications primer 

 - Fourth Edition 
 - London  Pitman Pub  1993 
 - 198 p 
<br/><br/><label>ISBN: </label>9780273601579 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Communication Engineering
<br/><br/><label>LC Class. No.: </label>621.382 LAN 1993 
<br/><br/><label>Dewey Class. No.: </label>621.382 LAN 1993 
<br/><br/><label>National Library of Medicine Call No.: </label>621.382 LAN 1993