putra afriansyah, Susanti E. ANALISIS PENYEBAB KERUSAKAN MESIN FUNCTION TESTER 9770. comasiejournal [Internet]. 2022Jan.28 [cited 2024May5];6(5):1-11. Available from: https://ejournal.upbatam.ac.id/index.php/comasiejournal/article/view/5374