Ventilated improved pit latrines recent developments in Zimbabwe
| Autor principal: | |
|---|---|
| Format: | Llibre |
| Idioma: | anglès |
| Publicat: |
Washington
Technology Advisory Group, World Bank
c1982.
|
| Col·lecció: | World Bank technical paper
3 Technology Advisory Group working paper 2 |
| Matèries: |