[1]
แสงทามาตย์พ., สอนนาป., and อินทชัยพ., “The Comparison of Cost and Return Dried and Boiled Rock salt in Ban Chai Sub-District, Ban Dung District, Udon Thani Province”, Journal of Roi Et Rajabhat University, vol. 13, no. 1, pp. 151-161, Apr. 2019.