Anita Fandra AldionaBHBD dan. OPTIMIZATION OF DEVELOPMENT PERFORMANCEANDQUALITY IMPROVEMENT OF BIODIESEL FROM OIL FRACTIONOF LIQUID WASTE OF PALM OIL PROCESS BY USING ULTRASONIC WAVES. J.Tek.Ind.Pert. [Internet]. 1 [cited 2024May17];22(1). Available from: https://jai.ipb.ac.id/index.php/jurnaltin/article/view/5591