“Modification of CaO Catalyst From Chicken Eggshell With Wet Impregnation Method for Two-Stage Process of Biodiesel from Tamanu Oil”, jse, vol. 10, no. 3, Jul. 2025, Accessed: Jun. 26, 2026. [Online]. Available: https://jse.serambimekkah.id/index.php/jse/article/view/1069