Wachiraporn Wilaiwan และ Wattasit Siriwong. (2012) Assessment of farmer and non-farmer health effects related to organophosphate pesticides exposure using blood cholinesterase activity as a biomarker in agricultural area at Ongkharak District Nakhon Nayok Province Thailand. Chulalongkorn University:ม.ป.ท.Wachiraporn Wilaiwan และ Wattasit Siriwong. 2012. Assessment of farmer and non-farmer health effects related to organophosphate pesticides exposure using blood cholinesterase activity as a biomarker in agricultural area at Ongkharak District Nakhon Nayok Province Thailand. ม.ป.ท.:Chulalongkorn University;Wachiraporn Wilaiwan และ Wattasit Siriwong. Assessment of farmer and non-farmer health effects related to organophosphate pesticides exposure using blood cholinesterase activity as a biomarker in agricultural area at Ongkharak District Nakhon Nayok Province Thailand. ม.ป.ท.:Chulalongkorn University, 2012. Print.