Okamoto Kyoichi, Komoriya Tomoe, Toyama Takeshi, Hirano Hirosuke, Garcia Teodinis, Baccay Melito, Macasilhig Marjun, and Fortaleza Benedicto. “PURIFICATION EXPERIMENTS ON THE PASIG RIVER, PHILIPPINES USING A CIRCULATION-TYPE PURIFICATION SYSTEM”. GEOMATE Journal 16, no. 54 (February 27, 2021): 49–54. Accessed May 4, 2024. https://geomatejournal.com/geomate/article/view/2624.