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- Food and Agriculture Organization of the United Nations 26
- United Nations Development Programme 6
- United Nations 5
- Pergamon Press (Oxford, England) 4
- United States. Government Printing Office 4
- Natural resources/water series 3
- Orta Doğu Teknik Üniversitesi (Ankara, Turkey) 3
- Unesco 3
- Academic Press 2
- Associates for Middle East Research 2
- International Association of Hydrological Sciences 2
- International Association of Scientific Hydrology 2
- Lebanon. Maṣlaḥah al-Waṭanīyah li-Nahr al-Līṭānī 2
- Tahal, mehandesim yoʻatsim 2
- University of Arizona 2
- Wissenschaftliche Buchgesellschaft 2
- American University (Washington, D.C.) 1
- Asian Institute of Technology 1
- France. Bureau de recherches géologiques et minières 1
- Frank Cass & Co. 1