D. Pagaduan, N., D. Catague, J., E. Dela Cruz, N., Orden, M. E. M., C. Fermil, A., P. Natividad, E., M. Umadhay, E., V. Obena, R., E. Elane, E., M. Jacinto, Jr., L., & E. Ramos, E. (2021). Characterization of Lahar and Black Sand Laden Soil Towards Improving Soil Productivity In Botolan, Zambales. CLSU International Journal of Science and Technology, 5(2), 47–68. https://doi.org/10.22137/ijst.2021.v5n2.05