Supamas Khamwiangsa และ Nopparat Kaakkurivaara;Kiattisak Bundet. (2022) Operational Efficiency of Gasoline and Battery operated Chainsaws. <i>Thai Journal of Forestry</i>, <i>41</i>(1), 13-21.Supamas Khamwiangsa และ Nopparat Kaakkurivaara;Kiattisak Bundet. "Operational Efficiency of Gasoline and Battery operated Chainsaws". Thai Journal of Forestry 41 (2022):13-21.Supamas Khamwiangsa และ Nopparat Kaakkurivaara;Kiattisak Bundet. Operational Efficiency of Gasoline and Battery operated Chainsaws. Kasetsart University:ม.ป.ท. 2022.