UNITED Nations Educational Scientific and Cultural Organization, Office of Statistics. A statistical study of wastage at school a study prepared for the International Buronu of Education
Wedi'i Gadw mewn:
| Prif Awdur: | |
|---|---|
| Fformat: | Llyfr |
| Iaith: | Saesneg |
| Cyhoeddwyd: |
UNESCO
1972
|
| Tagiau: |
Ychwanegu Tag
Dim Tagiau, Byddwch y cyntaf i dagio'r cofnod hwn!
|
Byddwch y cyntaf i adael sylw!