Jefferson, Thomas A. <br/><br/>
Marine mammals of the world /  
Thomas A. Jefferson ; Stephen Leath erwood and Marc A. Webber. 
 - Rome :    Food and Agriculture Organization of the United Nations,    1993. 
 - 320 p. :    ill. ;    24 cm. 
<br/><br/>  FAO species identification guide. 
<br/><br/><label>ISBN: </label>9251032920 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Marine mammals.