"Lead, Cadmium, and Mercury Concentration Levels in Some Commercial Fish From the Arabian Sea and the Gulf of Aden During the Years 2020–2022" (2023) Hadhramout University Journal of Natural & Applied Sciences, 20(1). موجود في: https://hu.edu.ye/hu-publications/journals/index.php/hujnas/article/view/150 (تاريخ الوصول: 25 يوليو 2026).