Publisher
- Sudan. Wizārat al-Iʻlām wa-al-Thaqāfah 4
- Associates for Middle East Research 3
- International Commission on Irrigation and Drainage 3
- MEI Publications 3
- Middle East Institute (Washington, D.C.) 3
- Nauka 3
- United Nations. Economic Commission for Africa 3
- World Meteorological Organization 3
- American Society of Civil Engineers 2
- American Universities Field Staff 2
- Financial Times Limited 2
- Frank Cass & Co. 2
- IC Publications 2
- Institut agronomique méditerranéen de Montpellier 2
- International Association of Hydrological Sciences 2
- International Association of Scientific Hydrology 2
- International Desalination Association 2
- International Water Resources Association 2
- Johns Hopkins Population Center 2
- La Documentation française 2