The radio amateur's handbook 

 - 18th ed. 
 - Connecticut  American Radio Relay League  1940 
 - 552p.  figs; index; plates 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ArrlRadioRadio - Amateurs'manualsRadio Amateurs
<br/><br/><label>Universal Decimal Class. No.: </label>621.396.6(021)  / LEA