Santi, D. .; Muin, A. .; Lestari, A. D. N. . 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 2023, 6.