Nanta Srikam และ Nuntavarn Vichit-Vadakan. (2001) Behavior change of pesticides use : a participatory appoach : a case study in Trakanphutphon district Unbonratchathani province. Chulalongkorn University:ม.ป.ท.Nanta Srikam และ Nuntavarn Vichit-Vadakan. 2001. Behavior change of pesticides use : a participatory appoach : a case study in Trakanphutphon district Unbonratchathani province. ม.ป.ท.:Chulalongkorn University;Nanta Srikam และ Nuntavarn Vichit-Vadakan. Behavior change of pesticides use : a participatory appoach : a case study in Trakanphutphon district Unbonratchathani province. ม.ป.ท.:Chulalongkorn University, 2001. Print.