Publisher
- United Nations Development Programme 25
- Balkema-proceedings and monographs in engineering, water, and earth sciences 24
- Tikhnun ha-mayim le-Yiśraʼel be-ʻe.m. 23
- United Nations Environment Programme 23
- American University in Cairo 20
- Geological Survey (U.S.) 18
- Irgun ʻovde ha-mayim (Israel) 18
- Claremont Research and Publications (Organization) 17
- Trud 17
- Turkey. Devlet Su İşleri Genel Müdürlüğü 17
- American Association for the Advancement of Science 16
- Butterworth-Heinemann (Firm) 16
- Geological Survey (U.S.). National Mapping Division 16
- Jordan. Sulṭat al-Maṣādir al-Ṭabīʻīyah 15
- Jāmiʻah al-Urdunīyah 15
- Kollek and Sons Ltd. 15
- Office arabe de presse et de documentation 15
- United States. Congress. Office of Technology Assessment 15
- Society for International Development. Israel Chapter 13
- United States. Department of Agriculture 13