Publisher
- United Nations 74
- Food and Agriculture Organization of the United Nations 71
- Associates for Middle East Research 55
- Unesco 52
- Çevik, İlhan, 1927- 49
- Jordan Press Foundation 47
- Oregon State Agricultural College 47
- Oregon State University. School of Science 46
- United States. Government Printing Office 39
- Orange Media Network (Oregon State University) 38
- British Broadcasting Corporation 37
- International Water Resources Association 34
- Middle East Institute (Washington, D.C.) 34
- Pergamon Press (Oxford, England) 32
- John F. Kennedy School of Government. Institute for Social and Economic Policy in the Middle East 30
- United States. Commodity Stabilization Service 26
- United States. Department of State 26
- Balkema-proceedings and monographs in engineering, water, and earth sciences 24
- American University in Cairo 20
- Confederated Tribes of the Siletz Reservation, Oregon 20