TY  - BOOK
AU  - Beard,Ruth Mary
TI  - An outline of Piaget's development psychology for students and teachers
AV  - BF 721 .B33
PY  - 1969///
CY  - New York
PB  - Basic Books
KW  - Piaget, Jean , 1896
KW  - Child study
N1  - Bibliography: p. 123-128
ER  -