TY  - BOOK
AU  - Van Geert Paul
TI  - Development of perception , cognition and language :  A theoretical approach
T2  - International library of psychology; V 12
SN  - 0710094205
U1  - S:4:7, M3 
PY  - 1983///
CY  - London
PB  - Routledge and Kegan Paul    
KW  - THEORY OF KNOWLEDGE; PSYCHOLOGY
ER  -