TY  - BOOK
AU  - Piaget, Jean
AU  - Piaget, Jean;Elkind, David (Ed.) Tenzer, Anita (Ed.)
TI  - Six psychological studies
U1  - SORxM96 
PY  - 1967///
CY  - New York
PB  - Random, House Inc.
KW  - SORxM96
ER  -