Chintana Sanvong และ Preeda Nathewet. (2014) A Comparative Study of Pelleted Broiler Litter Biochar Derived from Lab-Scale Pyrolysis Reactor with That Resulted from 200-Liter-Oil Drum Kiln to Ameliorate the Relations between Physicochemical Properties of Soil with Lower Organic Matter Soil and Soybean Yield. <i>EnvironmentAsia</i>, <i>7</i>(1), p95-103.Chintana Sanvong และ Preeda Nathewet. "A Comparative Study of Pelleted Broiler Litter Biochar Derived from Lab-Scale Pyrolysis Reactor with That Resulted from 200-Liter-Oil Drum Kiln to Ameliorate the Relations between Physicochemical Properties of Soil with Lower Organic Matter Soil and Soybean Yield". EnvironmentAsia 7 (2014):p95-103.Chintana Sanvong และ Preeda Nathewet. A Comparative Study of Pelleted Broiler Litter Biochar Derived from Lab-Scale Pyrolysis Reactor with That Resulted from 200-Liter-Oil Drum Kiln to Ameliorate the Relations between Physicochemical Properties of Soil with Lower Organic Matter Soil and Soybean Yield. Thai Society of Higher Education Institutes on Environment:ม.ป.ท. 2014.