TY  - BOOK
AU  - Piaget, Jean,
AU  - Tomlinson, Joan.
AU  - Tomlinson, Andrew.
TI  - The child's conception of the world
U1  - 155.4 
PY  - 1929///, repr. 1951
CY  - London
PB  - Routledge & Kegan Paul
KW  - Child study
N1  - Half-title: International library of psychology and scientific metho d
ER  -