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

 - 1st  
 - London  Newnes  1951 
 - vii,272p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Radio in Navigation
<br/><br/><label>Dewey Class. No.: </label>623.893  / S6992