Ratcliffe, J.A <br/><br/>
Physical principles of Wireless / 

 - 2nd.ed. 
 - London  Methuen & Co. Ltd  1931 
 - 102p.  ill. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Modern physics
<br/><br/><label>Dewey Class. No.: </label>539.7  / R195P