DJUMA, AGUSTINA WILHELMINA; OLLA, FRENGKI. THE EXAMINATION OF TOTAL HARDNESS ON DRINKING WATER WITH BOILING AND FILTER PROCESS USING COMPLEXOMETRY METHOD. JURNAL INFO KESEHATAN, [S. l.], v. 14, n. 1, p. 1168–1177, 2016. Disponível em: http://jurnal.poltekkeskupang.ac.id/index.php/infokes/article/view/105. Acesso em: 19 sep. 2024.