Organization of pre-primary education.
Gorde:
| Egile korporatiboa: | , , |
|---|---|
| Formatua: | Conference Proceeding Liburua |
| Hizkuntza: | English |
| Argitaratua: |
Geneva :
International Bureau of Education and Unesco,
1961.
|
| Saila: | Publication (International Bureau of Education) ;
no. 230. |
| Gaiak: |
| Deskribapen fisikoa: | 288 p. |
|---|