TY  - BOOK
AU  - De Cecco, John P.,
AU  - Crawford, William R.,
TI  - The psychology of learning and instruction: Educational psychology 
AV  - LB1051 D43 1974
PY  - 1974///
CY  - Englewood cliffs., n. j
PB  - Prentice Hall
KW  - Psicopedagogía
ER  -