Sutdacha Khunthong และผู้แต่งคนอื่นๆ. (2019) The determination of organic carbon contents oxidized by WalkleyBlack for analysis organic carbon in soils of Thailand. <i>Khon Kaen Agriculture Journal</i>, <i>47</i>(4), 797-808.Sutdacha Khunthong และผู้แต่งคนอื่นๆ. "The determination of organic carbon contents oxidized by WalkleyBlack for analysis organic carbon in soils of Thailand". Khon Kaen Agriculture Journal 47 (2019):797-808.Sutdacha Khunthong และผู้แต่งคนอื่นๆ. The determination of organic carbon contents oxidized by WalkleyBlack for analysis organic carbon in soils of Thailand. Faculty of Agriculture:ม.ป.ท. 2019.