Hamidi A, Belarbi F, Bouchelkia H, Bouchenak Khelladi RM. Performance of pozzolan in trickling filter for secondary treatment of urban wastewater in Tlemcen, Algeria. jwld [Internet]. 2022 Dec. 30 [cited 2026 Oct. 20];55(55):166-77. Available from: https://wydawnictwo.pan.pl/index.php/jwld/article/view/4762