"AUTO-PURIFICATION RESPONSE OF ONA RIVER, IBADAN TO INDUSTRIAL AND DOMESTIC EFFLUENT DISCHARGE" (2023) FULafia Journal of Science and Technology, 4(2), ص 74–78. موجود في: https://lafiascijournals.org.ng/index.php/fjst/article/view/103 (تاريخ الوصول: 17 مايو 2026).