TY  - BOOK
AU  - Keats, John Augustus
AU  - Collis, Kevin Francis
TI  - Cognitive development: Reseach based on a neo-piagetian apprach 
SN  - 0471995053
AV  - BF723.C5 K42
PY  - 1978///
CY  - Chichester
PB  - J. Wiley
KW  - Cognición en niños
ER  -