Laongdown Sangla และ Sith Dangpradub; Jidapa Dangpradub; Kongsak Kumhangsongkram; Sawet Jareankat. (2007) Effect of Physical characteristics on Seed Deterioration of Soybean Varieties/Lines. <i>Thai Agricultural Research Journal</i>, <i>25</i>(2), 166-176.Laongdown Sangla และ Sith Dangpradub; Jidapa Dangpradub; Kongsak Kumhangsongkram; Sawet Jareankat. "Effect of Physical characteristics on Seed Deterioration of Soybean Varieties/Lines". Thai Agricultural Research Journal 25 (2007):166-176.Laongdown Sangla และ Sith Dangpradub; Jidapa Dangpradub; Kongsak Kumhangsongkram; Sawet Jareankat. Effect of Physical characteristics on Seed Deterioration of Soybean Varieties/Lines. Department of Agriculture:ม.ป.ท. 2007.