Allen, E T <br/><br/>
DR. HILLEBRAND AS I KNEW HIM.  [electronic resource] 

 -  Science (New York, N.Y.)  Jul 1931 
 - 60-2 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0036-8075 
<br/><br/><label>Standard No.: </label>10.1126/science.74.1907.60  doi