Lehman, E H <br/><br/>
College math for 11-year-olds.  [electronic resource] 

 -  Science (New York, N.Y.)  Jul 1967 
 - 367 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0036-8075 
<br/><br/><label>Standard No.: </label>10.1126/science.157.3787.367  doi