Heru Sigit Purwanto (2022) “Temperature f Gold Mineralization In Tugurejo Area and Its Surrounding, Slahung Subdistrict, Ponorogo District, East Java Province, Indonesia”, iJournals:International Journal of Software & Hardware Research in Engineering ISSN:2347-4890, 10(4). Available at: https://ijournals.in/journal/index.php/ijshre/article/view/103 (Accessed: 5 March 2026).