Aldania R, Suparno. Determination of Sound Absorption and Water Absorption by Composite Boards Made from Egg Cardboard. jppipa, pendidikan ipa, fisika, biologi, kimia [Internet]. 2024 Apr. 25 [cited 2024 Jul. 4];10(4):1801-8. Available from: https://jppipa.unram.ac.id/index.php/jppipa/article/view/2830