Narongsak Thammachot และผู้แต่งคนอื่นๆ. (2014) The efficiency of different types of wood charcoal on increasing carbon content on surfaces of low carbon steel in the pack carburizing process. <i>KKU Engineering Journal</i>, <i>41</i>(3), 383-391.Narongsak Thammachot และผู้แต่งคนอื่นๆ. "The efficiency of different types of wood charcoal on increasing carbon content on surfaces of low carbon steel in the pack carburizing process". KKU Engineering Journal 41 (2014):383-391.Narongsak Thammachot และผู้แต่งคนอื่นๆ. The efficiency of different types of wood charcoal on increasing carbon content on surfaces of low carbon steel in the pack carburizing process. Faculty of Engineering, Khon Kaen Univeristy:ม.ป.ท. 2014.