Setiadi, Eko Arief, Wini Rahmawati, Pulung Karo Karo, Muhammad Yunus, and Perdamean Sebayang. 2017. “Efek Penambahan Fe3Mn7 Terhadap Sifat Fisis Dan Mekanik α-Fe2O3”. Piston: Journal of Technical Engineering 1 (1):30-34. https://doi.org/10.32493/pjte.v1i1.547.