TY  - BOOK
AU  - Marx,Melvin Herman
AU  - Tombaugh,Tom N.
TI  - Motivation: Psychological principles and educational implications 
U1  - 152.5 
PY  - 1967///]
CY  - San Francisco
PB  - Chandler Publ. Co.
KW  - Motivation (Psychology)
KW  - Educational psychology
N1  - Bibliogr.: p. 253-276
ER  -