Kusuma Piriyapun. (2022) The Establishment of Buffer Zone According to the Factory Act by Geographic Information System: a Case Study of Tha Kham Subdistrict, Bang Pakong District, Municipality Chachoengsao Province. <i>Journal of Information Science</i>, <i>40</i>(4), 31-55.Kusuma Piriyapun. "The Establishment of Buffer Zone According to the Factory Act by Geographic Information System: a Case Study of Tha Kham Subdistrict, Bang Pakong District, Municipality Chachoengsao Province". Journal of Information Science 40 (2022):31-55.Kusuma Piriyapun. The Establishment of Buffer Zone According to the Factory Act by Geographic Information System: a Case Study of Tha Kham Subdistrict, Bang Pakong District, Municipality Chachoengsao Province. Department of Information ScienceFaculty of Humanities and Social Sciences, Khon Kaen University:ม.ป.ท. 2022.