Aziz RZ, Wahyuni HC. Strategy To Increase Technological Sophistication To Increase Helmet Productivity With Technometric Methods And 5W1H . ijins [Internet]. 2023Jul.1 [cited 2024Jul.22];23:10.21070/ijins.v23i.1045. Available from: https://ijins.umsida.ac.id/index.php/ijins/article/view/1045