Kittidecha C, Chaiklang A. The Productivity Improvement of Bottled Water Manufacturing using Work Study Technique. J. Manuf. Manage. Technol. [internet]. 2022 Jun. 30 [cited 2026 Oct. 2];1(1):21-9. available from: https://ph01.tci-thaijo.org/index.php/jMMT/article/view/247626