Vertebrate life /  
Pough Harvey B. ; Janis Christine M. ; Heiser John B. 
 - 6th ed. 
 - New Jersey  Prentice Hall  2002 
 - xviii , 699 p. ;  coll. , ill.   26 cm. 
<br/><br/><label>ISBN: </label>0-13-041248-1 
<br/><br/><label>LC Class. No.: </label>QL605  / .P68  2002