Certificates of competency in the merchant navy, deck officer requirements 

 - London  Her Majest's Stationary Office  1977 
 - iv, 78 p. 
<br/><br/><label>ISBN: </label>115120661 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Human resource management
<br/><br/><label>Dewey Class. No.: </label>658  / CER