Whales, Dolphins, and Porpoises of the Eastern North Pacific and Adjacent Arctic Waters :  A guide to their identification / 
Stephen Leatherwood ... [et al.]. 
 - New York, USA :  Dover Publications,  1988. 
 - 245 p. ;  il. ;   cm. 
<br/><br/>Bibliografía: p. 214-215 
<br/><br/><br/>Inglés 
<br/><br/><label>ISBN: </label>0486256510  Normal 
<br/><br/><label>Subjects--Index Terms: </label>Whales Ballena 
<br/><br/><label>Dewey Class. No.: </label>599.5