Admiralty handbook of wireless telegraphy, 
2v.; v1. magnetism and electricity, v2. wireless telegraphy theory 
 - Delhi  English Booke Store  1966 
<br/><br/><label>Subjects--Index Terms: </label>Telegraph, Wireless. 
<br/><br/><label>Dewey Class. No.: </label>621.3841  / ADM