Ghifary Fachrizal Ridlo Arifin, Djoko Sihono Gabriel. “Desıgn Crıterıa For Materıal Value Conservatıon Of Flexıble Plastıc Packagıng”. International Journal of Advanced Science and Technology 29, no. 7 (May 2, 2020): 88 - 97. Accessed April 27, 2024. http://sersc.org/journals/index.php/IJAST/article/view/13171.