Sinnott, E W <br/><br/>
THE "AGE AND AREA" HYPOTHESIS OF WILLIS.  [electronic resource] 

 -  Science (New York, N.Y.)  Nov 1917 
 - 457-9 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0036-8075 
<br/><br/><label>Standard No.: </label>10.1126/science.46.1193.457  doi