Sirirat Klongpanichapak. (1995) Mutagenic tests of steviol and stevioside. Mahidol University,:ม.ป.ท.Sirirat Klongpanichapak. 1995. Mutagenic tests of steviol and stevioside. ม.ป.ท.:Mahidol University,;Sirirat Klongpanichapak. Mutagenic tests of steviol and stevioside. ม.ป.ท.:Mahidol University, 1995. Print.