BURHAN, B.; SUHERMAN, S.; ABRAM, P. H. 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://jurnalfkipuntad.com/index.php/jme/article/view/821. Acesso em: 4 dec. 2024.