Welty, Joel Carl. <br/><br/>
The life of birds / 
by Joel, Carl Welty. 
 - 2nd. ed. 
 - Philadelphia :  W. B. Saunders,  1975. 
 - xv. 623 p. :  ill. ;  27 cm. 
<br/><br/>Includes bibliographical references 
<br/><br/><label>ISBN: </label>0721692311 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Birds.
<br/><br/><label>Dewey Class. No.: </label>598