TY  - BOOK
AU  - Piaget,Jean
TI  - The child's conception of geometry,
AV  - LB1139.G4 P53
U1  - 136.74513 
PY  - 1960///]
CY  - New York
PB  - Basic Books
KW  - Geometry concept
N1  - Translation of La géométrie spontanée de l'enfant
ER  -