Kusuma, Safira, Heru Subaris Kasjono, and Yamtana. “The The Use of Rice Husk Ash, Saw Dust and Coconut Fiber (CASE2SK) in a Diesel Engine at Sawmill Industry”. Sanitasi: Jurnal Kesehatan Lingkungan 14, no. 2 (June 17, 2022): 100–107. Accessed October 19, 2024. https://e-journal.poltekkesjogja.ac.id/index.php/Sanitasi/article/view/1246.