O'Relley, J. J. <br/><br/>
Telecommunication principles 

 - 2nd 
 - London  Chapman & Hall  1984 
 - vii,158 p.  24.5cm 
 - Tutorial  Guides in Electronic Engineering-5 .
<br/><br/><label>ISBN: </label>0412437007 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication engineering<br/>Telecommunications
<br/><br/><label>Dewey Class. No.: </label>621.38  / ORE