PENGURANGAN NON VALUE ADDED ACTIVITIES MENGGUNAKAN METODE LEAN SIX SIGMA: Elly Wuryaningtyas Yunitasari Program Studi Teknik Industri Fakultas Teknik Universitas Sarjanawiyata Tamansiswa, Yogyakarta, DIY, Indonesia. EJD [Internet]. 2018 Sep. 2 [cited 2026 Jan. 19];11(2):15-2. Available from: https://jurnal.ummu.ac.id/index.php/dintek/article/view/133