TY  - BOOK
AU  - Piaget Jean
AU  - Inhelder Barbel
AU  - Lunzer E A
AU  - Szeminska Alina
TI  - Child's conception of geometry
U1  - 136.7 
PY  - 1960///
CY  - London
PB  - Routhledge & Kagan Paul
KW  - Child Psychology
KW  - Differential psychology
KW  - Psychology
N1  - Tr. from French
ER  -