Punjaporn Putthatesk. (1995) Purification of urease from Bacillus pasteurii. Mahidol University,:ม.ป.ท.Punjaporn Putthatesk. 1995. Purification of urease from Bacillus pasteurii. ม.ป.ท.:Mahidol University,;Punjaporn Putthatesk. Purification of urease from Bacillus pasteurii. ม.ป.ท.:Mahidol University, 1995. Print.