Atchariya Saengthongthip, and Ratamanee Nuntasarn. “DRAINED SHEAR STRENGTH PARAMETERS OF COMPACTED KHON KAEN LOESS BY DIRECT SHEAR TEST”. GEOMATE Journal 16, no. 57 (December 31, 2018): 28–34. Accessed July 6, 2022. https://geomatejournal.com/geomate/article/view/2798.