Keawzang U. Logistics system development to enhance competitiveness for Herbal products Case Study: Southern Gulf of Thailand Provincial Cluster Chumphon, Surat Thani, Nakhon Si Thammarat and Phatthalung. JSBA [internet]. 2021 Apr. 26 [cited 2025 Apr. 6];6(4):39-50. available from: https://so04.tci-thaijo.org/index.php/JSBA/article/view/249850