จีระออน จ. Research Study to improve process safety through training By using the Why - Why Analysis principle and ECRS principles. Case study: Yakult (Thailand) Co., Ltd. J Admin Manag [Internet]. 2020 Apr. 23 [cited 2024 Apr. 30];10(1):14-23. Available from: https://so02.tci-thaijo.org/index.php/fam/article/view/239863