TY  - BOOK
AU  - Bruner,Jerome Seymour
TI  - Studies in cognitive growth: a collaboration at the Center for Cognitive Studies 
SN  - 0471114006
AV  - BF721 S8.2
PY  - 1966///
CY  - New York
PB  - J. Wiley
KW  - PIAGET, JEAN,
KW  - Niño, Estudio del
ER  -