Sulaiman, Najmawati, Elok Faiqoh, Besse Irna Tawaddud, and Kiranti Maulidya Muntasir. 2024. “Utilization of Printing Plate Waste As Applied Chemistry Learning Media For Using Engraving and Knocking Techniques”. KnE Engineering 6 (1). https://doi.org/10.18502/keg.v6i1.15449.