Linggawati A. Preparation and Characterization of Calcium Oxide Heterogeneous Catalyst Derived from Anadara Granosa Shell for Biodiesel Synthesis. KEG [Internet]. 2016 Sep. 5 [cited 2025 Sep. 9];1(1). Available from: https://knepublishing.com/index.php/KnE-Engineering/article/view/494