TY  - GEN
AU  - Richmond, P. G.
TI  - An introduction to Piaget
U1  - 136.72 
PY  - 1970///
CY  - London
PB  - Routledge and Kegan Paul
KW  - Intellect
KW  - Social Steraction
KW  - Knowledge
KW  - Child study
ER  -