Navitex manual 

 - London  International Maritime Organization  1988 
 - vii,35p.  24cm. 
<br/><br/><label>ISBN: </label>9280112384 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Navigational warnings, special
<br/><br/><label>LC Class. No.: </label>PAM VK798.N28