TY  - BOOK
AU  - Piaget,Jean
AU  - Mays,Wolfe
TI  - The principles of genetic epistemology: Jean Piaget
U1  - 155.413 PIA 
PY  - 1972///
CY  - London
PB  - Routledge and K. Paul
KW  - Cognition in children
KW  - Genetic epistemology
ER  -