TY  - BOOK
AU  - Piaget,Jean
AU  - Elkind,David
AU  - Tenzer,Anita
TI  - Six psychological studies
PY  - 1968///
CY  - New York
PB  - Vintage Books, A Division of Random House
KW  - Cognition
KW  - Addresses, essays, lectures
N1  - Bibliogr.: p. [159]-162
ER  -