1. Seasonal variations of soil microflora and their activities in Riyadh Region, Saudi Arabia, 1. Algae;Abu-Zinada;Bulletin of Faculty of Science, Riyadh University,1975
2. Introduction to Soil Microbiology;Alexander,1977
3. Marine algae of the Arabian Gulf Coast of Saudi Arabia;Basson;Botanica Marina,1979
4. Methods of Soil Analysis;Black,1965
5. The microflora. Adaptations to life in extremely saline lakes;Borowitzka;Hydrobiologia,1981