Analisis Reduksi Emisi Gas Kendaraan Bermotor Menggunakan Adsorben Berbasis Biomassa Limbah Tempurung Siwalan. jse [Internet]. 2026 Jan. 1 [cited 2026 May 1];11(1). Available from: https://jse.serambimekkah.id/index.php/jse/article/view/1418