1. Viewpoint;Abdullah;IDA News,1989
2. Civic Water Quality;Al-Sofi;Symposium on Effects of Water Quality on Human Health and Agriculture in GCC, Al-Khobar, Saudi Arabia,1986
3. Water Sources and Utilization;Bashnak;American Society of Mechanical Engnieers' Saudi Chapter Second Seminar, Jeddah, Saudi Arabia,1989
4. Application of Hybrid MSF/RO Concept;Al-Sofi;WSIA Annual Conference, Technical Proceedings, Orlando, Florida,1984
5. Hybrid Plant;Al-Sofi;WSIA/SWCC Desalination Seminar, Alkhobar & Jeddah, Saudi Arabia,1984