Ratnasari, Ika Fitriani Dyah, Devi Devi, Roni Ismoyojati, and Ilham Febriansyah. “Effect of Manual and Retort Klin Methods on Chemical Characteristics of Palm Oil Waste Biochar”. AGRICOLA 14, no. 2 (September 10, 2024): 58-63. Accessed January 10, 2026. https://ejournal.unmus.ac.id/index.php/agricola/article/view/6230.