Suttipong Pruangka และ Mongkon Ta-oun. (2016) Effect of spent wash liquor on soil pH, electrical conductivity, organic matter, extractable calcium and magnesium of coarse-textured and fine-textured soils. <i>KKU Engineering Journal</i>, <i>43</i>(S2), 299-302.Suttipong Pruangka และ Mongkon Ta-oun. "Effect of spent wash liquor on soil pH, electrical conductivity, organic matter, extractable calcium and magnesium of coarse-textured and fine-textured soils". KKU Engineering Journal 43 (2016):299-302.Suttipong Pruangka และ Mongkon Ta-oun. Effect of spent wash liquor on soil pH, electrical conductivity, organic matter, extractable calcium and magnesium of coarse-textured and fine-textured soils. Faculty of Engineering, Khon Kaen University:ม.ป.ท. 2016.