TY  - BOOK
AU  - Ault,Ruth L.
TI  - Children's cognitive development: Piaget's theory and the process approach 
U1  - 136.72 
PY  - 1977///
CY  - New York
PB  - Oxford University Press
KW  - Piaget, Jean,
KW  - Cognition in children
KW  - Child psychology
N1  - Includes index
ER  -