Ridgway, Robert. <br/><br/>
The birds of North and middle America ; a descriptive catalogue... 

 - Washington :  Government Printing Office,  1901- 
 - v.  ; láms. 
 - Bulletin of the United States National Musseum  ; 50 .
 - Bulletin of the United States National Musseum  ; 50 .
<br/><br/><label>LCCN: </label>48420 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aves--América del Norte.
<br/><br/><label>Dewey Class. No.: </label>598.2  / R53