Okan, O., V. Ugonabor, C. Onu, and J. Chinedu. “PPLICATION OF TRICKLING FILTER WITH HYBRID BIOFILM SUPPORT MEDIA IN THE TREATMENT OF PETROLEUM EFFLUENT”. LAUTECH Journal of Engineering and Technology 16, no. 2 (June 28, 2022): 94-105. Accessed January 30, 2023. https://laujet.com/index.php/laujet/article/view/516.