Presbitero, Alan L., and Vincent Christian D. Quimbo. “THE EFFECT OF SLOPE ON THE EROSION COEFFICIENT OF UMINGAN, MAASIN AND MALITBOG CLAYS”. Annals of Tropical Research 13, no. 1-4 (October 15, 1991): 73–84. Accessed May 1, 2025. https://atr.vsu.edu.ph/article/view/618.