TY  - BOOK
AU  - Ball,Samuel
TI  - Motivation in Education
T2  - Educational psychology
SN  - 012077450X
U1  - 370.154 22
PY  - 1977///
CY  - New York
PB  - Academic Press
KW  - Motivation in education
N1  - Includes bibliographical references and indexes
ER  -