Rith Watthanachaiyingcharoen. (1993) Application of thin-layer bioautography in analysis of the combined antibiotics in feeds. Mahidol University,:ม.ป.ท.Rith Watthanachaiyingcharoen. 1993. Application of thin-layer bioautography in analysis of the combined antibiotics in feeds. ม.ป.ท.:Mahidol University,;Rith Watthanachaiyingcharoen. Application of thin-layer bioautography in analysis of the combined antibiotics in feeds. ม.ป.ท.:Mahidol University, 1993. Print.