Encyclopedia of marine mammals/ 
edited by W F Perrin, Bernd G Würsig and J G M Thewissen. 
 - 2nd ed. 
 - London :  Academic,  c2009. 
 - xxxiv, 1316 p. :  ill. (some col.), maps ;  28 cm. 
<br/><br/> Previous ed.: 2001. 
<br/><br/>Includes bibiliography references and index. 
<br/><br/><label>ISBN: </label>9780123735539 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mammifères marins--Encyclopédies.<br/>Marine mammals--Encyclopedias.<br/>Meeressäugetiere.