Pansuppawat W, Poolying A. Cost Benefit Analysis and Sensitivity of Investment Project of Coffee Products in Nan Province. BALARMUTL [internet]. 2022 Dec. 30 [cited 2025 Dec. 11];10(2):51-64. available from: https://so05.tci-thaijo.org/index.php/balajhss/article/view/258048