Sonnenberg, G. J. (Gerrit Jacobus). <br/><br/>
Radar and electronic navigation 
G. J. Sonnenberg. 
 - 5th ed. 
 - London  Butterworth Scientific  1982. 
 - 376 p. : ill. ; 23 cm. 
<br/><br/><label>ISBN: </label>0408002727 
<br/><br/><label>LCCN: </label>77-030476 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronics in navigation