The Adsorption Effect of Pine Resin (Pinus Merkusii) in Reducing Hardness (CaCO3) in Clean Water. Medico Legal Update, [S. l.], v. 21, n. 1, p. 100–106, 2021. DOI: 10.37506/mlu.v21i1.2288. Disponível em: https://ijop.net/index.php/mlu/article/view/2288. Acesso em: 15 jun. 2026.