PENENTUAN BILANGAN PERMANGANAT DAN KESADAHAN PADA AIR SUMUR GALI SUMUR BOR DAN PDAM. Journal of Pharmaceutical and Medicine, [S. l.], v. 1, n. 2, p. 64–72, 2024. Disponível em: https://httpsejournalstikesindah.com/index.php/jopm/article/view/10. Acesso em: 27 jul. 2026.