فهد بن ناصر إبراهيم البركه

Barakah, F. N. , E .M. Ramadan and A. M. Heggo (2000). Diversity of heavy metals-tolerant microorganisms isolated from arid calcareous soil of Riyadh region, Saudia Arabia. Arab. Univ. J. Agric. Sci.: 8: 573-594.