SIMPSON, G G <br/><br/>
Are nonflying sings functionless?  [electronic resource] 

 -  Science (New York, N.Y.)  Sep 1950 
 - 342 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0036-8075 
<br/><br/><label>Standard No.: </label>10.1126/science.112.2908.342  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animals<br/>Birds