Tetley, L.   1941- <br/><br/>
Electronic aids to navigation /  [Book]. 
L. Tetley, D. Calcutt.  
 - London :   Edward Arnold,   1986. 
 - ix,357p. :   ill. ;   25cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0713135484 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronics in navigation.