Cornell, Ethel Letitia,  1892- <br/><br/>
The variability of children of different ages and its relation to school classification and grouping, 
by Ethel L. Cornell ... 
 - Albany,  The University of the state of New York,  1937. 
 - 98 p.  diagrs., tables.  23 cm. 
 - University of the state of New York bulletin,  no. 1101 Educational research studies,  1937, no. 1 .
<br/><br/><label>LCCN: </label>e  37000184  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Individuality.<br/>Ability grouping in education.
<br/><br/><label>LC Class. No.: </label>LB3061  / .C648