TY  - BOOK
AU  - Marx, H. Melvin
AU  - Tombaugh N. Tom
TI  - Motivation: Psychological Principles and Implications 
SN  - 0810201666
AV  - LB1027 .M37 1967
PY  - 1967///
CY  - Scranton
PB  - Chandler
KW  - Theory of education
N1  - includes bibliography and  index
ER  -