TY  - BOOK
AU  - Hetland,Lois
AU  - Veenema,Shirley
ED  - Harvard Project Zero
TI  - The project Zero classroom: views on understanding 
U1  - 372.21 
PY  - 1999///
CY  - Cambridge, United States
PB  - Harvard University Graduate School of Education
KW  - EDUCACION TEMPRANA DE NIÑOS
KW  - EDUCACION PREESCOLAR
ER  -