TY  - BOOK
AU  - Ruth L. Ault
TI  - Children`s cognitive development : Piaget`s theory and the process approach
U1  - 649 
PY  - 1977///
CY  - New York
PB  - Oxford University Press
N1  - Ruth L. Ault: Children`s cognitive development : Piaget`s theory and the process approach.  New York.  Oxford University Press, 1977.--(649AUL)
ER  -