Welty, Joel Carl,  1901- <br/><br/>
The life of birds / 
Joel Carl Welty 
 - 3rd ed. 
 - Philadelphia :  Saunders College Pub.,  1982 
 - xiv, 754 p. :  ill. ;  25 cm. 
<br/><br/>Includes index Bibliography: p. 652-716 
<br/><br/><label>ISBN: </label>0030579171 
<br/><br/><label>LCCN: </label>81-52678 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Birds