An integrated geophysical and hydrogeological approach to aquifer vulnerability mapping: a case study from Ishielu, Ebonyi State. Acque Sotterranee - Italian Journal of Groundwater, [S. l.], v. 15, n. 1, 2026. DOI: 10.7343/as-2026-928. Disponível em: https://www.acquesotterranee.net/acque/article/view/928. Acesso em: 17 apr. 2026.