“Heavy Metals Pollution in Surface Water and Sediment of Lower Cross River System in Akwa Ibom State, Nigeria”, Commun. Phys. Sci, vol. 5, no. 2, pp. 117–123, Apr. 2020, Accessed: Sep. 02, 2026. [Online]. Available: https://journalcps.com/index.php/volumes/article/view/328