TY  - BOOK
AU  - Ginsburg,Hergbert
AU  - Opper,Sylvia -jtauth
TI  - Piaget's theory of intellectual development
U1  - 155.4 
PY  - 1969///
CY  - New Jurse
PB  - Prentice-Hall
KW  - Intellectual development
KW  - Piaget's theory
ER  -