Utilization of Iron (Stainless Steel) Waste for Making Prussian Blue Pigment: Pengaruh Konsentrasi Katalis MgO K2O Pada Transesterifikasi Minyak Biji Jarak (Ricinus Communis). Stannum 2024, 6 (2), 104-108. https://doi.org/10.33019/jstk.v6i2.4862.