TY  - BOOK
AU  - Piaget, J
AU  - Elkind, D
TI  - Six psychological studies:  Jean Piaget
SN  - 0340095571
PY  - 1968///
PB  - London UP
KW  - Psychology, educational
KW  - Child development
KW  - Child psychology
KW  - Cognition
ER  -