EKONG, Samuel Johnson. TRACE METALS ANALYSIS (ZN, CR, N, CU) IN BOREHOLE WATER FROM GENERAL HOSPITAL, CALABAR, NIGERIA. International Journal of Contemporary Health Sciences and Technology, [S. l.], v. 12, n. 2, p. 1–13, 2024. DOI: 10.5281/zenodo.13839205. Disponível em: https://aydenjournals.com/index.php/IJCHST/article/view/857. Acesso em: 23 aug. 2025.