MISHRA, D. R. . Hardness Removal in Safe Drinking Water via In-house Resin. JOURNAL OF BUSINESS MANAGEMENT & QUALITY ASSURANCE, [S. l.], v. 2, n. 3, 2022. Disponível em: http://journal.swaranjalipublication.co.in/index.php/JBMQA/article/view/50. Acesso em: 11 dec. 2025.