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Publisher
- United States. Joint Publications Research Service 17
- Food and Agriculture Organization of the United Nations 4
- Middle East Economic Digest Ltd. 4
- British Broadcasting Corporation 3
- Pergamon Press (Oxford, England) 2
- United Nations Development Programme 2
- University of London. School of Oriental and African Studies 2
- American Universities Field Staff 1
- Arab Centre for the Studies of Arid Zones and Dry Lands 1
- Centralny Instytut Informacji Naukowo-Technicznej i Ekonomicznej (Poland). Zakład Współpracy z Zagranicą w Zakresie Piśmiennictwa Naukowego 1
- Frank Cass & Co. 1
- International Commission on Irrigation and Drainage 1
- Longman (Firm) 1
- Markaz Ibn Khaldūn lil-Dirāsāt al-Inmāʼīyah 1
- Middle East Institute (Washington, D.C.) 1
- Muʼassasat al-Ahrām 1
- Nauka 1
- Princeton University 1
- Sudan 1
- Sudan. Wizārat al-Iʻlām wa-al-Thaqāfah 1