Reducing the Water Hardness by Using Electromagnetic Polarization Method. Al-Khwarizmi Engineering Journal, [S. l.], v. 12, n. 4, p. 111–116, 2017. DOI: 10.22153/kej.2016.07.002. Disponível em: https://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/325. Acesso em: 23 dec. 2024.