TY  - BOOK
AU  - Piaget, Jean.
AU  - Inbelder, Barbel.
TI  - The psychology of the child
U1  - 155.4 
PY  - 1969///
CY  - New York: 
PB  - Basic Books Publishers, Inc., 
KW  - Judgement
KW  - Motor intelligence
KW  - Psychology
KW  - Symbolic function
ER  -