TY  - BOOK
AU  - Piaget,Jean
AU  - Holloway, G. E. T.,
AU  - Mackenzie, M. J.,
AU  - Piaget,Jean
TI  - The child's conception of movement and speed
SN  - 0345023722165
AV  - BF721 P5327 1971
PY  - 1971///
CY  - New York
PB  - Ballantine Books
KW  - Psicología infantil
ER  -