TY  - BOOK
AU  - Inhelder,Barbel
AU  - Piaget,Jean
AU  - Lunzer,A.
AU  - Papert,D.
TI  - The early growth of logic in the child: Classification and seriation 
SN  - 0393004732
PY  - 1969///
CY  - New York
PB  - W.W. Norton & Co.
KW  - Reasoning in children
N1  - Translation of La genese des structures logiques elementaires; Includes bibliogr. references
ER  -