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Topic
- Watersheds 88
- Groundwater 42
- Irrigation 27
- Aquifers 26
- Agriculture 23
- Hydrology 20
- Water quality 20
- Precipitation (Meteorology) 16
- Climate 12
- Hydrogeology 9
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Publisher
- United States. Joint Publications Research Service 8
- Associates for Middle East Research 7
- Food and Agriculture Organization of the United Nations 6
- United Nations 6
- Unesco 4
- Jāmiʻah al-Urdunīyah 3
- Society for International Development. Israel Chapter 3
- United States. Army. Corps of Engineers 3
- World Bank 3
- Jāmiʻah al-Urdunīyah. Markaz al-Buḥūth wa-al-Dirāsāt al-Māʼīyah 2
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Decade
- 1980-1989 88