Amaechi - Onyerimma, C. A. Impact of Seasonal Variation of Heavy Metal Concentrations in Abattoir Effluents on Groundwater Quality in Port Harcourt Metropolis, Rivers State. WEB [Internet]. 2025 Jun. 28 [cited 2026 Sep. 20];3(6):99-109. Available from: https://web.semanticjournals.org/index.php/wos/article/view/821