Keith, Henney. & Richardson, G.A. <br/><br/>
Principles Of Radio 

 - 6th Ed. 
 -  Willy publication  1959 
 - 655p.  23 cm. 
<br/><br/><br/>Text in English 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>ELEC
<br/><br/><label>Index Terms--Genre/Form: </label><br/>F-09
<br/><br/><label>Dewey Class. No.: </label>621.381  / KEI