Jefferson, T. A. Leatherwood, S. Webber, M. A. <br/><br/>
Marine mammals of the world  (FAO species identification guide) 

 - Rome (Italy):   1993.  
 - 320 p. 
<br/><br/> FAO; 30 refs.; ills. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mamifero<br/>Mamifero aquatico<br/>Mar