Kimseng Choeun. 2008. Effects of calcium on rice grown in acid and alkaline soils of northeast Thailand. Faculty of Agriculture, Khon Kaen University;
Kimseng Choeun. (2008) Effects of calcium on rice grown in acid and alkaline soils of northeast Thailand . Khon Kaen University/Khon Kaen.
Kimseng Choeun. Effects of calcium on rice grown in acid and alkaline soils of northeast Thailand. . Khon Kaen:Khon Kaen University, 2008.
Kimseng Choeun. (2008) Effects of calcium on rice grown in acid and alkaline soils of northeast Thailand . Khon Kaen University/Khon Kaen.