Hamilton, W. J. Jr. <br/><br/>
American Mammals  : their lives, habits and economic relations 
/ W. J. Hamilton 
 - 1st. ed. 
 - New York  : McGraw-Hill Book Company  , 1939 
 - 434 p.  23 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mamíferos marinos
<br/><br/><label>Dewey Class. No.: </label>599.097