PREPARATION AND ACTIVITY TEST OF THE CATALYST USED IN CARBON DIOXIDE LASER OF SEALED TUBE . مجلة ديالى للبحوث الانسانية, Iraq, v. 1, n. 29, 2022. DOI: 10.57592/djhr.v1i29.1360. Disponível em: https://djhr.uodiyala.edu.iq/index.php/DJHR2022/article/view/1360. Acesso em: 12 2025.