Utanawan Boonruang. 2001. Environmental geology appraisal using GIS for sanitary landfill site selection in Changwat Chachoengsao. Field of Study Geology, Chulalongkorn University;
Utanawan Boonruang. (2001) Environmental geology appraisal using GIS for sanitary landfill site selection in Changwat Chachoengsao . Chulalongkorn University/Bangkok.
Utanawan Boonruang. Environmental geology appraisal using GIS for sanitary landfill site selection in Changwat Chachoengsao. . Bangkok:Chulalongkorn University, 2001.
Utanawan Boonruang. (2001) Environmental geology appraisal using GIS for sanitary landfill site selection in Changwat Chachoengsao . Chulalongkorn University/Bangkok.