American radio relay league (headquaters staff) <br/><br/>
Radio amateur's handbook 

 - 18 
 -  1941 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>59054 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electrical engineering
<br/><br/><label>Dewey Class. No.: </label>D666:4, H1