external_content.pdf
This manual and the free downloadable costing tool is the outcome of a project identified by the Water, Sanitation and Health Programme (WSH) of the World Health Organization (WHO) faced with the challenge of costing options for improved access, both to safe drinking water and to adequate sanitation...
| Γλώσσα: | English |
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| Έκδοση: |
IWA Publishing
2020
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