Noppon Nampradit. (2007) A study on the behavior of farmers regarding chemical utilization for the protection, control and elimination of plant pests : case studies of cassava, sugarcane and maize in Chainat and Suphanburi provinces. Mahidol University,:ม.ป.ท.Noppon Nampradit. 2007. A study on the behavior of farmers regarding chemical utilization for the protection, control and elimination of plant pests : case studies of cassava, sugarcane and maize in Chainat and Suphanburi provinces. ม.ป.ท.:Mahidol University,;Noppon Nampradit. A study on the behavior of farmers regarding chemical utilization for the protection, control and elimination of plant pests : case studies of cassava, sugarcane and maize in Chainat and Suphanburi provinces. ม.ป.ท.:Mahidol University, 2007. Print.