TY  - BOOK
AU  - Piaget, Jean
TI  - The origin of intelligence in the child
SN  - 710031459
U1  - 155.4 
PY  - 1953///
CY  - London
PB  - Routledge @  Kegan paul LTD.
KW  - Intelligence
KW  - Child Development
KW  - Child psychology
ER  -