Both C J <br/><br/>
World's radio broadcasting stations 

 - London  1981 
 - 214p 
<br/><br/><label>ISBN: </label>978-0408011563 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physics
<br/><br/><label>Dewey Class. No.: </label>530.2 POTW