Nchọfụ̀ta
Kee ihu a "BSF" na wiki a! Lekwa ihe ihu akwụkwọ i na-achọ wepụtara.
A biosand filter (BSF) bụ usoro ọgwụgwọ mmiri naeji eme ihe nke sitere na nzacha ájá na-adịghị ngwa ngwa. Biosand filters naewepụ pathogens ma kwụsie...22 KB (mkpurụ edemede 2,608) - 08:44, 25 Novemba 2023
