TY  - BOOK
AU  - Sperry,Len
TI  - Learning performance and individual differences: essays and readings 
PY  - 1972///
CY  - Foresman and Company, Glenview, Illinois
PB  - Scott
KW  - Educational psychology
KW  - Academic achievement
KW  - Intelligence levels
KW  - Individual differences
N1  - includes index; Bibliography: p. 321-326
ER  -