Budiyanto, Eko, Nugroho Hari Purnomo, Muzayanah Muzayanah, and Aida Kurniawati. 2024. “Contamination of E.Coli Bacteria in Spamdus Genjahan Water Distribution Network from Karst Groundwater Source”. Geosfera Indonesia 9 (1):67-76. https://doi.org/10.19184/geosi.v9i1.37040.