Hawker, Pat. <br/><br/>
A Guide to Amateur Radio / 
P. Hawker. 
 - Seventeenth Edition 
 - London :  Newnes-Butterworth,  1979. 
 - 128 p. :  fig. 
<br/><br/>Includes Index. 
<br/><br/><label>ISBN: </label>0-408-00385-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Radio Communication