Assembly twelfth (12th) Session, 9-20 November 1981 : resolutions and other decisions (resolutions 463-512)  

 - London  IMO  1982 
 - viii, 420p. 
<br/><br/><label>ISBN: </label>9280111477 
<br/><br/><label>Dewey Class. No.: </label>341.756  / IMO