Phomthep Suksirisumpun. 2007. The optimal policies for soled waste management with the effort to recycle. Field of Study Economics, Thammasat University;
Phomthep Suksirisumpun. (2007) The optimal policies for soled waste management with the effort to recycle . Thammasat University/Bangkok.
Phomthep Suksirisumpun. The optimal policies for soled waste management with the effort to recycle. . Bangkok:Thammasat University, 2007.
Phomthep Suksirisumpun. (2007) The optimal policies for soled waste management with the effort to recycle . Thammasat University/Bangkok.