Bootchai, S., Khamdaeng, T. ., Kaewsakul, N. . ., Sonsanam, A. . ., & Angboonta, P. . . (2024). The Development of Instructional Specimens for Studying the Effect of Welding Parameters. Journal of Technical and Engineering Education, 15(3), 70–81. retrieved from https://so10.tci-thaijo.org/index.php/FTEJournal/article/view/1372