Henney, Keith  <br/><br/>
Principles of radio / 
Keith Henney, Glen A. Richardson 
 - 6th ed. 
 - London :   John Wiley & Sons,  1957 
 - vii, 655 p. :  ill. ;  23 cm. 
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Radio
<br/><br/><label>Dewey Class. No.: </label>621.384  / HEP 1957