Rajak, Abdul, Tri Siswandi Syahputra, Muhammad Miftahul Munir, & K. Khairurrijal. " The Effect of Nonwoven Microfiber Substrate Polypropylene Thickness to Air Filtration Performance of Polyacrilonitrille Nanofiber." Jurnal ILMU DASAR [Online], 20.2 (2019): 95-104. Web. 6 Oct. 2024