TY  - BOOK
AU  - Piaget, Jean 
TI  - The child's conception of movement and speed
SN  - 345023722165
PY  - 1971///
CY  - New York
PB  - Ballantine Books
KW  - Piaget Jean 1896
KW  - 1980
KW  - Movement, Psychology of
KW  - Child study
N1  - Includes Index
ER  -