Developing and improving irrigation and drainage systems selected papers from World Bank seminars
| Awduron Eraill: | |
|---|---|
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
Washington, D.C.
World Bank
1992.
|
| Cyfres: | World Bank technical paper
178 |
| Pynciau: |