Sunandar A, Andriyanti F, Karim SBA, Zolkafli UK. Circular economy mapping in the palm oil value chain: Towards a conceptual framework for sustainable transition . JBKL [Internet]. 2026 Jan. 30 [cited 2026 Apr. 20];3(2):72-91. Available from: https://journal-iasssf.com/index.php/JBKL/article/view/3215