Ventilated improved pit latrines vent pipe design guidelines
| Príomhchruthaitheoir: | |
|---|---|
| Formáid: | LEABHAR |
| Teanga: | English |
| Foilsithe / Cruthaithe: |
Washington, D.C.
IBRD/World Bank
c1983
|
| Sraith: | TAG technical note
no.6 |
| Ábhair: |