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Topic
- Soils 35
- Watersheds 25
- Agriculture 23
- Irrigation 16
- Precipitation (Meteorology) 10
- Groundwater 9
- Water quality 8
- Climate 6
- Drainage 6
- Salinity 6
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Publisher
- Food and Agriculture Organization of the United Nations 24
- United Nations Development Programme 6
- Lebanon. Maṣlaḥah al-Waṭanīyah li-Nahr al-Līṭānī 2
- Unesco 2
- American University (Washington, D.C.) 1
- Frank Cass & Co. 1
- International Association of Hydrological Sciences 1
- International Symposium on Development of Ground Water Resources (1973 : Madras, India) 1
- Jāmiʻat al-Iskandarīyah 1
- Pergamon Press (Oxford, England) 1
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Repository
- Oregon State University. Libraries 35
Decade
- 1970-1979 35