PRAINETR, Supachai, Natchanun PRAINETR, and Sumitchai KANHAKHUN. 2020. “Development of Manufacturing Efficiency Using Industry Cluster and Invention Method Application: Case Study Machetes Production Group in Nakhon Phanom Province Thailand”. Walailak Journal of Science and Technology (WJST) 17 (9):990-97. https://doi.org/10.48048/wjst.2020.5398.