Jacobs, William Paul. <br/><br/>
What makes the leaves fall? 

 - San Francisco :  Freeman,  1955 
 - 7 p.  : ilus 
 - Scientific American Offprints  ; 116 .
 - Scientific American Offprints  ; 116 .
<br/><br/> "Reprinted from Scientific American, November 1955" 
<br/><br/><label>LCCN: </label>16605 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hojas.