Alsaqqar A, Khudair B, Al-Sulaiman A. Slow sand filtration as a tertiary treatment for the secondary effluent from sewage treatment plant. ASSOC ARA UNIV J ENG SCI [Internet]. 10Sep.2018 [cited 5May2024];25(3):169-7. Available from: https://jaaru.org/index.php/auisseng/article/view/176