Water supply for rural areas and small communities
| Prif Awdur: | |
|---|---|
| Awduron Eraill: | |
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
Geneva
World Health Organization
1959.
|
| Cyfres: | World Health Organization. Monographs series, no. 42
|
| Pynciau: |