Buathongrueang kannika, Meechana C, Bunchuay J, Petchjul S. Cost and Return Analysis of the Value Chain of Fallen Oil Palm Fruits into Community-based Products. JCDLQ [internet]. 2026 Sep. 12 [cited 2026 Sep. 16];14(3):68-80. available from: https://so02.tci-thaijo.org/index.php/JCDLQ/article/view/279182