GEO-SPATIAL MAPPING OF IRON (FE) AND MANGANESE (MN) PRESENT IN GROUNDWATER OF CLARK, PHILIPPINES. ASEAN Engineering Journal, [S. l.], v. 13, n. 1, p. 101–107, 2023. DOI: 10.11113/aej.v13.18432. Disponível em: https://journals.utm.my/aej/article/view/18432.. Acesso em: 23 jul. 2024.