Kamolwan Laopoolkit และ Kheoruenromne. (2011) Carbon sequestration of major upland agricultural soils in northeast plateau, Thailand. Kasetsart University,:ม.ป.ท.Kamolwan Laopoolkit และ Kheoruenromne. 2011. Carbon sequestration of major upland agricultural soils in northeast plateau, Thailand. ม.ป.ท.:Kasetsart University,;Kamolwan Laopoolkit และ Kheoruenromne. Carbon sequestration of major upland agricultural soils in northeast plateau, Thailand. ม.ป.ท.:Kasetsart University, 2011. Print.