Collar,N.J. and P.Andrew <br/><br/>
Birds to watch. The ICBP World Checklist of Threatened birds 

 - 
 - Washington - EEUU  Smithsonian Institution Press  s.f. 
 - 303p.  Rojo 21cm 
 - ICBP technical publication  v.8 .
<br/><br/><label>ISBN: </label>0-87474-301-X 
<br/><br/><label>Subjects--Topical Terms: </label>--Aves--Ornitologia--Avifauna--Pajaros--Conservacion--Extincion--Preservacion--Animales amenazados--<br/>Zoologia