D. Pagaduan, Nestor, Jeam D. Catague, Nenita E. Dela Cruz, Maria Excelsis Magpantay Orden, Angelo C. Fermil, Elmer P. Natividad, Edzel M. Umadhay, Ronber V. Obena, Edwin E. Elane, Lorenzo M. Jacinto, Jr., and Emman E. Ramos. 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://ijst.clsu.edu.ph/index.php/ijst/article/view/24.