“Study on Concentration of some Heavy Metals in Nile Tilapia, Oreochromis niloticus and Cat Fish, Clarias gariepinus from Lake Manzala, Egypt” (2025) Taj Al-Ma’rifa Journal, 2(2). Available at: https://histt.edu.ly/ojs/index.php/tajournal/article/view/77 (Accessed: 14 September 2026).