Nelkon, Michael. <br/><br/>
Physics and radio  /  by M. Nelkon. 

 - London :  E. Arnold & co.,  c1944, [reprinted 1956] 
 - viii, 388 p. :  ill. ;  19 cm. 
<br/><br/> "First published, 1944."  "Answers": p. 381-383. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Radio.<br/>Sound.<br/>Electricity.
<br/><br/><label>Dewey Class. No.: </label>621.384  / NEP 1956