Aruan DGR. ANALISA KADAR BESI (Fe) AIR SUMUR BOR DI JALAN BAKTI LUHUR KELURAHAN DWIKORA MEDAN. JALM [Internet]. 2020 Dec. 16 [cited 2024 Nov. 21];5(2):10-2. Available from: http://114.7.97.221/index.php/ALM/article/view/1598