EBY, GEORGE S,WELCH, HERBERT E,WATSON, HERBERT M <br/><br/>
UNDERSTANDING RADIO A GUIDE TO PRACTICAL OPERATION AND THEORY 

 - 3RD 
 - NEWYORK  MCGRAW HILL  1960 
 - 706P 
<br/><br/><label>Dewey Class. No.: </label>621.384 WAT'U