Rakhmina D, Mulanova R, Haitami H. Effect of Active Carbon of Coffee Robusta Waste (Coffea robusta Lindl.) in Reducing Iron of Peat Water. Med.Lab.Tech.J. [Internet]. 2018Jun.30 [cited 2025Jan.26];4(1):12-5. Available from: https://ejurnal-analiskesehatan.web.id/index.php/JAK/article/view/173