Communication in water supply and sanitation resource booklet
| Prif Awduron: | , , |
|---|---|
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
The Hague, The Netherlands
IRC, International Water and Sanitation Centre
1993.
|
| Rhifyn: | revised edition. |
| Pynciau: |