Jiraroj Tirabaedya, Orapin Piyasakulkiat, Wichai Thosuwanjinda. Comprehension of the Supervisors Working at T.T.S. Engineering (2004) Co., Ltd. Regarding the Ministerial Regulation on the Standards of the Administration and Safety Management, Occupational Health and Workplace Environment Involving Construction Work . dpssj [internet]. 2022 Apr. 1 [cited 2026 Oct. 3];1(1):34-4. available from: https://so08.tci-thaijo.org/index.php/dpssj/article/view/647