Aritonang S, Jupriyanto J, Juhana R. ANALYSIS OF THE PROCESS OF IRON SAND PROCESSING INTO SPONGE IRON IN ORDER TO SUPPORT THE DEFENSE INDUSTRY OF STEEL RAW MATERIALS. Han. Belneg [Internet]. 2019 Apr. 30 [cited 2026 Jul. 23];9(1):1-16. Available from: https://upgradeojs.rifqisyams.id/index.php/JPBH/article/view/514