Klomjit, P. ., Anurattananon, C. ., Chatmuangpak, A. ., & Amaluk, A. . (2020). Efficiency Improvement by Simulation Technique in the Parcel Service Company. Science & Technology Asia, 25(4), 20–29. Retrieved from https://ph02.tci-thaijo.org/index.php/SciTechAsia/article/view/199234