Simpson, George Gaylord <br/><br/>
Penguins  : past and present, here and there 

 - 2a. ed. 
 - New Haven and London  : Yale University  , c.1976 
 - 150 p.  : Il., fot. col, mapas  ; 21 cm. 
<br/><br/><label>ISBN: </label>0-300-01969-6 
<br/><br/><label>Subjects--Topical Terms: </label><br/>AVES
<br/><br/><label>Subjects--Index Terms: </label>pingüinos (penguins) 
<br/><br/><label>Dewey Class. No.: </label>598.441