Hale, G E <br/><br/>
COOPERATION IN RESEARCH.  [electronic resource] 

 -  Science (New York, N.Y.)  Feb 1920 
 - 149-55 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0036-8075 
<br/><br/><label>Standard No.: </label>10.1126/science.51.1311.149  doi