TY - JOUR T1 - Preparation and Characterization of Sound-Absorbent Based on Polystyrene Reinforced Primary Sludge and Fly Ash from Pulp Mill AU - Tengku Rachmi Hiadayani,Basuki Wirjosentono,Darwin Yunus Nasution, Tamrin JO - International Journal of Technology VL - 14 IS - 3 SP - 291 EP - 319 PY - 2023 DA - 2023/05/09 SN - 2087-2100 DO - https://doi.org/10.14716/ijtech.v14i3.5131 UR - https://ijtech.eng.ui.ac.id/article/view/5131