“Concentration Effect of MgO K2O Catalyst on Transesterification of Castor Seed (Ricinus Communis) Oil: Pengaruh Konsentrasi Katalis MgO K2O Pada Transesterifikasi Minyak Biji Jarak (Ricinus Communis)”. 2024. Stannum : Jurnal Sains Dan Terapan Kimia 6 (2): 96-103. https://doi.org/10.33019/jstk.v6i2.4692.