Pettingill, Olin Sewall,  1907-, <br/><br/>
Ornithology in laboratory and field 
by Olin Sewall Pettingill ; Illustrated by Walter J. Breckenridge. 
 - Minneapolis, Minn.  Burgess  1970. 
 - xvii, 524 pages.:  illustartions.  ;  26 cm. 
<br/><br/> 4th ed. 
<br/><br/><label>ISBN: </label>0808716093 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ornithology