ผิวนิ่ม ร. Feasibility Study of Setting up a Coconut Shell Charcoal Briquette Plant in Prachuapkhirikhan. Eng. & Technol. Horiz. [internet]. 2020 Jun. 11 [cited 2026 Sep. 10];28(1):49-54. available from: https://ph01.tci-thaijo.org/index.php/lej/article/view/241122