William I. Orr. <br/><br/>
Radio Handbook 

 - 9th 
 -  Howard W. Sams & Co Inc  Indiana  1975 
 - 32-43, 974 
<br/><br/><br/>En 
<br/><br/><label>Subjects--Topical Terms: </label><br/>  Radio
<br/><br/><label>Dewey Class. No.: </label>621.396  /  WIL