KHIOUANI, A., & OUMARI, M. (2018). DISTRIBUTION AND TREATMENT OF FLUORIDE ANIONS IN DRINKING WATER OF ALGERIAN TOWNS: (BATNA–BISKRA–EL-OUED). Courrier Du Savoir, (26). Téléchargé le de http://univ-biskra.dz/revues/index.php/cds/article/view/3953