BURHAN, Burhan; SUHERMAN, Suherman; ABRAM, Paulus Hengky. Determination of Sodium (Na) and Calcium (Ca) Levels in Sea water at Posona Village. Media Eksakta, [S. l.], v. 17, n. 1, p. 57–61, 2021. DOI: 10.22487/me.v17i1.821. Disponível em: https://www.jurnalfkipuntad.com/index.php/jme/article/view/821. Acesso em: 15 oct. 2025.