TY  - BOOK
AU  - Pratt,Chris
AU  - Garton,Alison F.
TI  - Systems of representation in children: development and use
SN  - 0471925012
PY  - 1993///
CY  - New York
PB  - John Wiley & Sons
KW  - Mental processes
KW  - In infancy and childhood
ER  -