Sudawan Kosintrakulchai. (2000) Selection of beta-galactosidase producing lactic acid bacteria and their production enhancement through U.V. mutagenesis. Mahidol University,:ม.ป.ท.Sudawan Kosintrakulchai. 2000. Selection of beta-galactosidase producing lactic acid bacteria and their production enhancement through U.V. mutagenesis. ม.ป.ท.:Mahidol University,;Sudawan Kosintrakulchai. Selection of beta-galactosidase producing lactic acid bacteria and their production enhancement through U.V. mutagenesis. ม.ป.ท.:Mahidol University, 2000. Print.