Performance of dual-media down-flow rapid gravity filter
By: Abd al-Wahhab, Majid Ibrahim; al-Ghanim, Nada Naum; al-Sabbagh, Bassim Hafiz. Iraqi Journal of Chemical and Petroleum Engineering. Vol. 8, no. 1 (Mar. 2007), pp.19-25, 7 p.
Subjects: Sanitation; Waste water