Bennington, T. W. <br/><br/>
Shortwave radio and the ionosphere with special reference to everyday professional and amateur problems of shortwave transmission and reception 
T. W. Bennington 
 - London  Iliffe and Sons Ltd  1950 
 - 138p.  ill.  22cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Radio, Short-wave<br/>Electric waves
<br/><br/><label>LC Class. No.: </label>TK6553.B39