THLAKMA, Sunday Richard; TUKUR, Murtala Muhammad; HENA, Musa Kulausa; ABARE, Madaki Lamis; MUHAMMAD K, Adamu. GIS-Based Underground Water Quality Risk Mapping of Kaltungo L.G.A, Gombe State, Nigeria. American Scientific Research Journal for Engineering, Technology, and Sciences, Jordan, v. 44, n. 1, p. 264–277, 2018. Disponível em: https://www.asrjetsjournal.org/American_Scientific_Journal/article/view/4077. Acesso em: 17 sep. 2025.