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Creator
- Food and Agriculture Organization of the United Nations 13
- United Nations 13
- Taylor, George C. (George Carroll), 1915-2008 8
- United Nations Development Programme 8
- Kally, Elisha 7
- Khouri, Rami G., 1948- 7
- Howard Humphreys & Sons 6
- Lebanon. Maṣlaḥah al-Waṭanīyah li-Nahr al-Līṭānī 6
- Arar, Abdullah 5
- Egypt. Wizārat al-Rayy 5
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Topic
- Agriculture 190
- Irrigation 154
- Groundwater 123
- Watersheds 92
- Politics and government 85
- Hydrology 77
- Water quality 77
- Technology 68
- Economics 65
- Demography 61
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Publisher
- Food and Agriculture Organization of the United Nations 42
- Pergamon Press (Oxford, England) 25
- United States. Joint Publications Research Service 24
- United States. Central Intelligence Agency 23
- United Nations 17
- United Nations Development Programme 15
- Jordan. Sulṭat al-Maṣādir al-Ṭabīʻīyah 12
- Trud 12
- Tikhnun ha-mayim le-Yiśraʼel be-ʻe.m. 11
- Middle East Institute (Washington, D.C.) 10
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Decade
- 1970-1979 588