TY  - BOOK
AU  - BEARD,Ruth M.
TI  - An outline of Piaget's developmental psychology for students and teachers 
PY  - 1969///
CY  - New York 
PB  - Basic Books
KW  - Piaget, Jean
KW  - 1896 - 1980
KW  - Child psychology
N1  - Includes bibliographical references
ER  -