TY  - SER
AU  - Appel,Marilyn H.[ed]
ED  - Jean Piaget Society
TI  - Topics in cognitive development
U1  - 155.413 
PY  - 1978///
CY  - New York 
PB  - Plenum Press
KW  - Child development
KW  - Cognition
N1  - Editor: Marilyn H. Appel
ER  -