Peterson, Roger Tory,  1908-1996. <br/><br/>
How to know the birds:  a simple aid to bird recognition /  
Roger Tory Peterson 
 - Boston,  Houghton Mifflin Co.,  1949. 
 - 144 p.  illus. (part col.)  20 cm. 
<br/><br/><label>LCCN: </label>49007708  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pássaros--Estados Unidos.<br/>Birds--United States.
<br/><br/><label>LC Class. No.: </label>QL676  / .P46 
<br/><br/><label>Dewey Class. No.: </label>598