Assessment of Groundwater Wells Pollution by Some Heavy Metals in El-Beida City-Libya. Journal of Pure & Applied Sciences , [S. l.], v. 21, n. 4, p. 270–275, 2022. DOI: 10.51984/jopas.v21i4.2214. Disponível em: https://sebhau.edu.ly/journal/jopas/article/view/2214. Acesso em: 29 jan. 2026.