Natthamon Tangjitwattanachai และ Kritapon Sommart. (2010) Metabolizable Energy Requirements and Ennergetic Efficiency for Growth in Thai Native Beef Cattle /. Khon Kaen University,:ม.ป.ท.Natthamon Tangjitwattanachai และ Kritapon Sommart. 2010. Metabolizable Energy Requirements and Ennergetic Efficiency for Growth in Thai Native Beef Cattle /. ม.ป.ท.:Khon Kaen University,;Natthamon Tangjitwattanachai และ Kritapon Sommart. Metabolizable Energy Requirements and Ennergetic Efficiency for Growth in Thai Native Beef Cattle /. ม.ป.ท.:Khon Kaen University, 2010. Print.