Wilson, Mary F. <br/><br/>
Vertebrate natural history / 
Mary F.Willson. 
 - Philadelphia :  Saunders College Publishing,  1984. 
 - 621p.:  ill.;  24cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0030618045 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Vertebrates