The ocean realm /  
Robert D. Ballard ... [et.al.]. 
 - Washington D.C. :    The National Geographic Society,    1978. 
 - 199 p. :    ill.(col.) ;    26 cm. 
<br/><br/>Include bibliographical references and index 
<br/><br/><label>ISBN: </label>0870442511 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Underwater exploration.<br/> Marine biology.
<br/><br/><label>Dewey Class. No.: </label>578.77