Juba Idowu David1, Olakunle Lawal2 (2025) “Applying Lean Six Sigma to Optimize Green Hydrogen Production Processes with a Focus on Safety, Health, and Wellbeing”, International Bulletin of History and Social Science, 2(1), pp. 52–60. Available at: https://ibhss.org/index.php/web/article/view/5 (Accessed: 4 March 2026).