Jamsai Suwansaksri. (1986) Spectrophotometric study of paraquat, diquat and their mixture. Mahidol University,:ม.ป.ท.Jamsai Suwansaksri. 1986. Spectrophotometric study of paraquat, diquat and their mixture. ม.ป.ท.:Mahidol University,;Jamsai Suwansaksri. Spectrophotometric study of paraquat, diquat and their mixture. ม.ป.ท.:Mahidol University, 1986. Print.