Key points are not available for this paper at this time.
F. N. Muchena, C. K. K. Gachene, Soils of the Highland and Mountainous Areas of Kenya with Special Emphasis on Agricultural Soils, Mountain Research and Development, Vol. 8, No. 2/3, African Mountains and Highlands (May - Aug., 1988), pp. 183-191
Muchena et al. (Sun,) studied this question.