“Study on Concentration of some Heavy Metals in Nile Tilapia, Oreochromis niloticus and Cat Fish, Clarias gariepinus from Lake Manzala, Egypt”, jkc, vol. 2, no. 2, Sep. 2025, Accessed: Jun. 24, 2026. [Online]. Available: https://histt.edu.ly/ojs/index.php/tajournal/article/view/77