Remo, E. M. ., J. . Florano, N. R. . Bragais, and K. F. . Vidal. “A Proposed Project of Using Polypropylene (Pp) in Disposable Face Masks As an Additive to a Plastic Lumber: Vol.4, No.1”. Ascendens Asia Singapore – Bestlink College of the Philippines Journal of Multidisciplinary Research, vol. 4, no. 1, June 2024, https://ojs.aaresearchindex.com/index.php/aasgbcpjmra/article/view/14050.