The Radio Amateur's Handbooks/ 
American Radio Relay League 
 - 18th ed. 
 - New Hampshire:  American Radio Relay League,  c1940 
 - 520 p.;  23 cm. 
<br/><br/><label>ISBN: </label>Rs. 72.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Radio--Amateur's manuals<br/>Amateur radio stations<br/>Radio--Antennas<br/>Radio frequency modulation<br/>Radio--Transmitters and transmission<br/>Radio lines<br/>Radio--Receivers and reception
<br/><br/><label>Dewey Class. No.: </label>621.38402