Soynapa Harnmetta. 2004. Drivers' opinions of participation in solving air pollution problems caused by ground traffic in Nonthaburi province, ThailandSoynapa Harnmetta. Field of Study Environment, Mahidol University;
Soynapa Harnmetta. (2004) Drivers' opinions of participation in solving air pollution problems caused by ground traffic in Nonthaburi province, ThailandSoynapa Harnmetta . Mahidol University/Bangkok.
Soynapa Harnmetta. Drivers' opinions of participation in solving air pollution problems caused by ground traffic in Nonthaburi province, ThailandSoynapa Harnmetta. . Bangkok:Mahidol University, 2004.
Soynapa Harnmetta. (2004) Drivers' opinions of participation in solving air pollution problems caused by ground traffic in Nonthaburi province, ThailandSoynapa Harnmetta . Mahidol University/Bangkok.