"Seasonal Assessment of (Escherichia coli) Contamination Resulting from Untreated Wastewater in Marine Ecosystems of Al-Mukalla and Broom Mayfa, Hadhramout, Yemen " (2026) Hadhramout University Journal of Natural & Applied Sciences, 23(1). موجود في: https://hu.edu.ye/hu-publications/journals/index.php/hujnas/article/view/979 (تاريخ الوصول: 30 سبتمبر 2026).