SANONGRAJ, Sompop, Research Center for Environmental and Hazardous Waste Management, Department of Chemical Engineering, Faculty of Engineering, Ubonratchathani University, Ubonratchathani 34190, Thailand

• Walailak Journal of Science and Technology (WJST) Vol. 3 No. 1 (2006) - Research Article
  Study of Environmental Impacts Before and After Using the Organic-Chemical Fertilizer in Rice Paddy Fields
  Abstract  PDF