Nugroho, B., Agnesty, S., Aulia, H. and Fidyaningrum, H. 2023. TEST OF BIODIESEL FROM USED COOKING OIL FROM DORMITORY X ON OPACITY AND EXHAUST EMISSIONS HC, CO AND CO2. EDUSAINTEK: Jurnal Pendidikan, Sains dan Teknologi. 10, 2 (Feb. 2023), 439-456. DOI:https://doi.org/10.47668/edusaintek.v10i2.749.