Rizal, Y. (2021). PENGAYAAN TIMAH (Sn) DAN UNSUR TANAH JARANG (Ce, La, dan Y) ENDAPAN PLASER DI BADAU, KABUPATEN BELITUNG. Bulletin Of Geology, 5(3), 663-684. Retrieved from https://buletingeologi.com/index.php/buletin-geologi/article/view/135