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ANALISIS PENGENDALIAN KUALITAS PRODUKSI BOGIE BARBER S2HD9C MENGGUNAKAN METODE LEAN SIX SIGMA DI PT BARATA INDONESIA (PERSERO) GRESIK . JOURNAL OF RESEARCH AND TECHNOLOGY [Internet]. 2016 Dec. 30 [cited 2025 Jun. 30];2(2):32-46. Available from: https://journal.unusida.ac.id/index.php/jrt/article/view/235