Dangma, W., Sukrat, C., Treerat, S., & Damrongwattana, jittima. (2024). STUDY OF LEARNING CENTER EXTRACTION OF COLD PRESSED COCONUT OIL, LAN SAKA DISTRICT NAKHON SI THAMMARAT PROVINCE. Journal of Innovation for Sustainable Social Development, 2(1), 42–51. retrieved from https://so18.tci-thaijo.org/index.php/J_ISSD/article/view/129