Nontananandh, S. ., & Changnoi, B. . (2012). Internet GIS, Based on USLE Modeling, for Assessment of Soil Erosion in Songkhram Watershed, Northeastern of Thailand. Agriculture and Natural Resources, 46(2), 272–282. Retrieved from https://li01.tci-thaijo.org/index.php/anres/article/view/242812