TY  - BOOK
AU  - Okoń,Wincenty
AU  - Wilgocka-Okoń,Barbara
ED  - Unesco.
ED  - International Bureau of Education.
TI  - The school readiness project
SN  - 9231010654
U1  - 372.2 
PY  - 1973///
CY  - Paris
PB  - Unesco
KW  - Readiness for school
N1  - Bibliography: p. 29-30
ER  -