(1989). Ground-water development and management in developing countries: 25 years of United Nations activities, 1963 - 1988.
Chicago-Zitierstil (17. Ausg.)Ground-water Development and Management in Developing Countries: 25 Years of United Nations Activities, 1963 - 1988. New York, 1989.
MLA-Zitierstil (9. Ausg.)Ground-water Development and Management in Developing Countries: 25 Years of United Nations Activities, 1963 - 1988. 1989.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.