LAYADE, Gideon; MAKINDE, Victor; OGUNKOYA, Charles. Groundwater Concentration of Trace Elements In Gbede Area of Oyo State, Nigeria. International Journal of Sciences: Basic and Applied Research (IJSBAR), Jordan, v. 38, n. 1, p. 82–90, 2018. Disponível em: https://www.gssrr.org/JournalOfBasicAndApplied/article/view/8866. Acesso em: 6 dec. 2025.