Astuti, D.W., Fatimah, S. and Anie, S. 2016. ANALISIS KADAR KESADAHAN TOTAL PADA AIR SUMUR DI PADUKUHAN BANDUNG PLAYEN GUNUNG KIDUL YOGYAKARTA. Analit : Analytical and Environmental Chemistry. 1, 1 (Oct. 2016). DOI:https://doi.org/10.23960/aec.v1i1.2016.p.