TY  - BOOK
AU  - Ball,Samuel
TI  - Motivation in education
T2  - Educational psychology
SN  - 012077450X
AV  - LB1065 .M67
U1  - 370.15/4 
PY  - 1977///
CY  - New York
PB  - Academic Press
KW  - Motivation in education
KW  - Local
N1  - Includes bibliographies and indexes
ER  -