Sehah, Sehah, Aziz, Abdullah, Hartono, Hartono, AND Rediko, Muhammad. " UTILIZATION OF MAGNETIC ANOMALY DATA TO LOCALIZE GROUNDWATER FRACTURES IN VOLCANIC ROCK COMPLEXES IN THE SITU TIRTA MARTA AREA, PURBALINGGA REGENCY, CENTRAL JAVA, INDONESIA" Proceeding ICMA-SURE [Online], (10 January 2025)