Technology for water supply and sanitation in developing countries report of a WHO Study Group.
| Awdur Corfforaethol: | |
|---|---|
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
Geneva
World Health Organization
1987.
|
| Cyfres: | Technical report series (World Health Organization)
742. |
| Pynciau: |


