Burton, Maurice. <br/><br/>
International wildlife encyclopedia  vol. 20 TRE- WAT / 
Maurice Burton [and] Robert Burton. 
 - New York :  Marshal Cavendish,  2002. 
 - 3rd ed. 2740-2878 p. :  col. ill. ;  29 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>076147286X (hbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Zoology.