Peterson, Roger Tory,  1908- <br/><br/>
A field guide to the birds east of the rockies / 
Roger Tory Peterson 
 - Boston :  Houghton Mifflin Co.,  1980 
 - 384 p. :  ill. ; map.  19 cm. 
 - Series ;  v.1 .
<br/><br/> Sponsored by the National Audubon Society and National Wildlife Federation 
<br/><br/>Includes index 
<br/><br/><label>ISBN: </label>0395266211 
<br/><br/><label>LCCN: </label>80-014304 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Birds--North America.