The Nanomaterial role in the re-classification costs of modern manufacturing product . Journal of Madenat Alelem, [S. l.], v. 9, n. 2, p. 149–176, 2017. Disponível em: https://journal.mauc.edu.iq/index.php/JMAUC/article/view/78. Acesso em: 23 feb. 2026.