Carr, Joseph J <br/><br/>
Elements of electronic communications 

 - 
 - Reston Publishing Co., Virginia  1978 
 - 486 
 - .
<br/><br/>  
<br/><br/><label>ISBN: </label>  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication
<br/><br/><label>Dewey Class. No.: </label>621.380413  CAR-E