TY  - GEN
AU  - PIAGET, Jean
TI  - Psychology and epistemology: Towards a theory of knowledge
SN  - 0-670-58196-8
AV  - BF 723 .C5 P5313 
PY  - 1971///
CY  - New York
PB  - Viking press
KW  - Cognition in children
KW  - Cognition
KW  - Knowledge, Theory of
ER  -