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- Food and Agriculture Organization of the United Nations 5
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- 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
- Praeger Publishers 1
- Trud 1
- United Nations Environment Programme 1
- Wissenschaftliche Buchgesellschaft 1
