MANURUNG, Donita; GINTING, Eva Marlina. ANALISIS AIR SUMUR BOR DESA PEKAN BANDAR KHALIFAH KABUPATEN SERDANG BEDAGAI BERDASARKAN KUALITAS FISIKA DAN KIMIA. EINSTEIN (e-Journal), [S. l.], v. 6, n. 2, 2019. DOI: 10.24114/einstein.v6i2.12078. Disponível em: https://jurnal.unimed.ac.id/2012/index.php/einsten/article/view/12078. Acesso em: 12 oct. 2025.