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- Maktab al-Dirāsāt al-Lubnānīyah wa-al-ʻArabīyah 13
- United States. Joint Publications Research Service 13
- Food and Agriculture Organization of the United Nations 9
- Middle East Economic Digest Ltd. 6
- United Nations Development Programme 3
- United Nations 3
- World Bank 3
- International Commission on Irrigation and Drainage 2
- Pergamon Press (Oxford, England) 2
- Unesco 2
- Water Information Center, inc. 2
- Allerton Press 1
- American Academy of Arts and Sciences 1
- American Society of Civil Engineers 1
- American University (Washington, D.C.) 1
- Butterworth-Heinemann (Firm) 1
- IPC Magazines, Ltd. 1
- International Water Resources Association 1
- Israel. Miśrad ha-biṭaḥon 1
- Jordan. Sulṭat al-Maṣādir al-Ṭabīʻīyah 1
