Amporn Niemthanorm. (1997) Production of yeast extracts from spent brewer's yeast. Mahidol University,:ม.ป.ท.Amporn Niemthanorm. 1997. Production of yeast extracts from spent brewer's yeast. ม.ป.ท.:Mahidol University,;Amporn Niemthanorm. Production of yeast extracts from spent brewer's yeast. ม.ป.ท.:Mahidol University, 1997. Print.