Sonnenberg, G. J. <br/><br/>
Radar and electronic navigation 

 - 6th Ed. 
 - London  Butterworth-Heineman  1988 
 - 368p. 
<br/><br/><label>ISBN: </label>9780408011914 
<br/><br/><label>Dewey Class. No.: </label>623.89  / SON