Manalang, Mark Franklin, Giovanni Ocampo, Al-Shaimah Alonto, and Gallardo Rimocal. 2023. “GEO-SPATIAL MAPPING OF IRON (FE) AND MANGANESE (MN) PRESENT IN GROUNDWATER OF CLARK, PHILIPPINES”. ASEAN Engineering Journal 13 (1):101-7. https://doi.org/10.11113/aej.v13.18432.