TAYONE, J. C. Biological and Chemical Characteristics of Groundwater in a Rural Settlement Area of Davao Oriental. American Scientific Research Journal for Engineering, Technology, and Sciences, [S. l.], v. 14, n. 1, p. 94–99, 2015. Disponível em: https://asrjetsjournal.org/index.php/American_Scientific_Journal/article/view/829. Acesso em: 2 may. 2024.