Sriyono, Murdohardono D, Suparno. Pengujian Nilai Keasaman (pH) Air Tailing PT. Freeport Indonesia pada Mile Pos 39 Sungai Otomona Timika Mimika Papua. migaszoom [Internet]. 2019Nov.21 [cited 2024May18];1(2):1-8. Available from: http://ejurnal.ppsdmmigas.esdm.go.id/sp/index.php/migaszoom/article/view/221