OKADEMI , Nancy; ODIPO , Osano; KHAZENZI , Judith. Defluorination Effectiveness of Modified Biosand Filters . African Journal of Education,Science and Technology (AJEST), [S. l.], v. 7, n. 1, p. Pg 123–140, 2022. Disponível em: http://ajest.org/index.php/ajest/article/view/814. Acesso em: 3 apr. 2026.