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Topic
- Irrigation 18
- Agriculture 13
- Economics 6
- Groundwater 6
- Watersheds 4
- Bureaucracy 3
- Climate 3
- Politics and government 3
- Precipitation (Meteorology) 3
- Reclamation of land 3
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Publisher
- Food and Agriculture Organization of the United Nations 4
- United States. Joint Publications Research Service 3
- International Commission on Irrigation and Drainage 2
- American University (Washington, D.C.) 1
- Christian Science Publishing Society 1
- International Water Resources Association 1
- Middle East Institute (Washington, D.C.) 1
- Trud 1
- United Nations Environment Programme 1
- Éditions de l'École des hautes études en sciences sociales 1
Decade
- 1970-1979 18