Apiradee Keeratimateekorn. (2007) Appropriate alternative fuels for improving air quality, case study : biodiesel. Mahidol University,:ม.ป.ท.Apiradee Keeratimateekorn. 2007. Appropriate alternative fuels for improving air quality, case study : biodiesel. ม.ป.ท.:Mahidol University,;Apiradee Keeratimateekorn. Appropriate alternative fuels for improving air quality, case study : biodiesel. ม.ป.ท.:Mahidol University, 2007. Print.