TY  - BOOK
AU  - Lindgren, Henry Clay,
AU  - 
ED  - 
ED  - 
ED  - 
ED  - 
SN  - 471536490
SN  - 2
PY  - 1976///];copyright 197646
CY  - New York
PB  - Wiley
KW  - 
KW  - 2
KW  - 0
KW  - 6
KW  - 20
KW  - Educational psychology
N1  - Includes index; Bibliography: p. 491-514; 5
ER  -