A’YUN, Qurota; HANIK, Nur Rokhimah; ESKUNDARI, Ratna Dewi. Analysis of Hardness Level and pH of Drilled Well Water in Semin Village, Semin District, Gunungkidul Regency. Jurnal Biologi Tropis, [S. l.], v. 23, n. 3, p. 310–315, 2023. DOI: 10.29303/jbt.v23i3.5086. Disponível em: https://jurnalfkip.unram.ac.id/index.php/JBT/article/view/5086. Acesso em: 19 may. 2024.