TY  - BOOK
AU  - Piaget, Jean
TI  - Development of thought: : equilibration of cognitive structures
SN  - 0631189106
U1  - 155.413 
PY  - 1975///
CY  - Oxford
PB  - Basil
KW  - Knowledge, Theory of
KW  - Child study
N1  - HB
ER  -