References
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- Beadnell, H. J. L. 1901. Dakhla Oases; Its topography and geography. — Egyptian Surv. Dept., Report.
- Piper, C. S. 1950. Soil and Plant Analysis. — Adelaide. Australia: U. P.
- Worsley, R. R. 1930. The Soils of the Libyan Oases. — Mins. Agr. Egypt. Tech. Com. No. 91.