Study the Impact of Quality Management System ISO 9001on Machinery Breakdowns. Al-Nahrain Journal for Engineering Sciences, [S. l.], v. 21, n. 4, p. 539–548, 2018. DOI: 10.29194/NJES.21040539. Disponível em: https://nahje.com/nahje/article/view/478. Acesso em: 27 apr. 2026.