Ground water devlopment and management in devloping countries 25 years of UN actvities 1963 -1988.
Ground water devlopment and management in devloping countries 25 years of UN actvities 1963 -1988.
- New York United Nations 1989
- iii , 34p cm.
General Book
X 42 : 8 . 1 (X) . N88<-- N63, M9/UN
General Book
X 42 : 8 . 1 (X) . N88<-- N63, M9/UN