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2. American Public Health Association (APHA), Standard Methods 2540 B, 2005. Total solids dried at 103–105°C. In: Standard Methods for the Examination of Water & Wastewater, twenty first ed., Washington D.C., USA, p. 256.
3. Soil erosion prediction using RUSLE for central Kenyan highland conditions;Angima;Agric. Ecosyst. Environ.,2003
4. Standard Test Method for Particle-Size Analysis of Soils;ASTM D422-63,2007
5. Standard Test Method for Permeability of Granular Soils (Constant Head);ASTM D2324-68,1968