“Physico-Chemical and Microbiological Assessment of Water Samples in Barangay Ferdinand, Marcos, Ilocos Norte”. International Journal of Multidisciplinary Studies in Higher Education 3, no. 1 (February 10, 2026): 54–66. Accessed October 16, 2026. https://journals.nxuspress.com/index.php/pub/article/view/278.