Mechanical Properties and Microstructural Characterization of Paper Produced from Rice Straw–Waste Paper Pulp Blends via Ethanol Organosolv Process. jse [Internet]. 2026 Jun. 30 [cited 2026 Jul. 1];11(3). Available from: http://jse.serambimekkah.id/index.php/jse/article/view/1795