Mudita และ Chamroeun. (1993) Training and extension activities for agricultural development in Ta Saang Development Center, Svay Rieng province, Cambodia. Khon Kaen University,:ม.ป.ท.Mudita และ Chamroeun. 1993. Training and extension activities for agricultural development in Ta Saang Development Center, Svay Rieng province, Cambodia. ม.ป.ท.:Khon Kaen University,;Mudita และ Chamroeun. Training and extension activities for agricultural development in Ta Saang Development Center, Svay Rieng province, Cambodia. ม.ป.ท.:Khon Kaen University, 1993. Print.