TY  - BOOK
AU  - Phillips,John L.
TI  - The origins of intellect: piaget's theory 
PY  - 1969///
CY  - San Francisco
PB  - W. H. Freeman
KW  - Piaget, Jean,
KW  - Intellect
KW  - Child psychology
N1  - Bibliography: p. 133-144; Open access
ER  -