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Topic
- Watersheds 26
- Soils 18
- Agriculture 17
- Irrigation 13
- Groundwater 10
- Precipitation (Meteorology) 10
- Water quality 8
- Salinity 6
- Sand 5
- Sprinkler irrigation 5
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Publisher
- Food and Agriculture Organization of the United Nations 26
- United Nations Development Programme 6
- Lebanon. Maṣlaḥah al-Waṭanīyah li-Nahr al-Līṭānī 2
Decade
- 1970-1979 26