School principals core actors in educational improvement
| Autor principal: | |
|---|---|
| Altres autors: | |
| Format: | Llibre | 
| Idioma: | English | 
| Publicat: | Paris
          Unesco, International Institute for Educational Planning
    
        2004. | 
| Matèries: | 
| Autor principal: | |
|---|---|
| Altres autors: | |
| Format: | Llibre | 
| Idioma: | English | 
| Publicat: | Paris
          Unesco, International Institute for Educational Planning
    
        2004. | 
| Matèries: |