Elvitriana, Muhammad Nasir, Muhammad Nizar, Vera Viena, Teuku Makmur, and Suhendrayatna. 2023. “Utilization of Angsana Leaves (Pterocarpus Indicus Willd) As a Natural Coagulant for Palm Oil Mill Effluent (POME) Treatment”. Jurnal Penelitian Pendidikan IPA 9 (12):12010-17. https://doi.org/10.29303/jppipa.v9i12.5574.