Ibrahim GA, Hamni A, Lestari SMP. Analysis of Surface Roughness Value When Drilling Magnesiumaz31 Using Taghuci Method. INSIST [Internet]. 2019Jan.25 [cited 2026Jan.15];2(2):71-4. Available from: https://insist.unila.ac.id.121-50-32-50.cpanel.site/index.php/ojs/article/view/82