Sangian, Hanny F, and Seni Tongkukut. “STUDY OF BIO-ETHANOL PREPARATION FROM ARENGA PALM SUGAR”. Jurnal Ilmiah Sains 11, no. 2 (October 31, 2011): 259–267. Accessed November 22, 2024. https://ejournal.unsrat.ac.id/v3/index.php/JIS/article/view/217.