TY  - BOOK
AU  - Piaget,Jean
AU  - Eleanor Duckworth.
TI  - Genetic epistemology
SN  - 393005968 (paperback)
AV  - BF 723 .C5 P5 1970 
PY  - 1970///
CY  - New York
PB  - W.W .Norton & Company
KW  - Cognition in children
KW  - Genetic epistemology
N1  - Includes bibliographical references and index
ER  -