Wilai Pethanakul. (1990) The search for the effective paraquat antidote combinations. Mahidol University,:ม.ป.ท.Wilai Pethanakul. 1990. The search for the effective paraquat antidote combinations. ม.ป.ท.:Mahidol University,;Wilai Pethanakul. The search for the effective paraquat antidote combinations. ม.ป.ท.:Mahidol University, 1990. Print.