Kennedy, George <br/><br/>
Electric communication systems 

 - 3rd 
 - New York  McGraw-Hill  1988 
 - 741 
<br/><br/><label>ISBN: </label>0-07-66362-9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication
<br/><br/><label>LC Class. No.: </label>C 621.380413 K382e 1988