Saraswati R, Sudiana IK, Suja IW. E-Book of Risk Management in High School Chemistry Laboratories as an Effort to Enhance Occupational Safety and Health. HJKK [Internet]. 2026 Feb. 16 [cited 2026 Feb. 27];14(1). Available from: https://ojspanel.undikma.ac.id/index.php/hydrogen/article/view/19451