Lubis DA, Pujangkoro S, Hidayati J. Lean Approach to Minimize Waste in Biscuit Production Process Using Value Stream Mapping Method at PT. XYZ . j.sist.teknik.industri. [Internet]. 2024Jul.29 [cited 2024Oct.13];26(2):120-7. Available from: https://talenta.usu.ac.id/jsti/article/view/13544