Budiyanto, Eko, Nugroho Hari Purnomo, Muzayanah Muzayanah, and Aida Kurniawati. “Contamination of E.Coli Bacteria in Spamdus Genjahan Water Distribution Network from Karst Groundwater Source”. Geosfera Indonesia 9, no. 1 (April 7, 2024): 67–76. Accessed April 2, 2025. https://geosfera.jurnal.unej.ac.id/index.php/GEOSI/article/view/37040.