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“Determination of Major Cation and Anion Content in Coconut Fiber Ash Potentially Renewable Catalyst: Penentuan Kandungan Kation dan Anion Mayor dalam Abu Serabut Kelapa Berpotensi Katalis Renewable”,
JISTECH, vol. 6, no. 2, Jan. 2023, Accessed: May 07, 2026. [Online]. Available:
https://www.jistechunipa.com/index.php/istech/article/view/141