I. Abdul-Wahab, Majid, Nada N. AI-Ghanim, and Baseem H. Essebbag. 2007. “Performance of Dual-Media Down-Flow Rapid Gravity Filters”. Iraqi Journal of Chemical and Petroleum Engineering 8 (1): 19-25. https://doi.org/10.31699/IJCPE.2007.1.3.