Sperry, Len. <br/><br/>
Learning performance and individual differences :  essays and readings / 
Len Sperry. 
 - Foresman and Company, Glenview, Illinois :  Scott,  1972. 
 - 331 p. ;  23 cm. 
<br/><br/> includes index 
<br/><br/>Bibliography: p. 321-326. 
<br/><br/><label>LCCN: </label>73-186157 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Educational psychology.<br/>Academic achievement.<br/>Intelligence levels.<br/>Individual differences.