Analysis of drinking ground water samples for heavy metals in Onitsha North local government area of Anambra State. International Journal of Biomedical and Advance Research, [S. l.], v. 11, n. 2, p. e5322, 2020. DOI: 10.7439/ijbar.v11i2.5322. Disponível em: https://ssjournals.co.in/index.php/ijbar/article/view/5322. Acesso em: 16 feb. 2026.