Karakteristik Struktur Mikro dan Gugus Fungsi Komposit Silika Sekam Padi dan Aspal - Ediman Ginting Suka; Ira Sudarsono Putri; Reka Puspitasari; Reza Arsela; Simon Sembiring; Iqbal Firdaus (Department of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung, 2020)