TY  - BOOK
AU  - Piaget, Jean, (1896-1980)
AU  - Elkind, David
AU  - Tenzer,Anita
TI  - Six psychological studies
PY  - 1968///
CY  - New York
PB  - Vintage Books
KW  - cognition
N1  - Includes bibliographical references and index
ER  -