TY  - BOOK
AU  - Hyde,D.M.Georgie
TI  - Piaget and conceptual development
SN  - 0039100731
PY  - 1970///
CY  - Rinehart and Winston, London
PB  - Holt
KW  - Piaget, Jean,
KW  - Cognition in children
N1  - Bibliography: p. 222-231
ER  -