“Facile Chemical Processing of Geloina Coaxans Shell and Sodium Dihydrogen Phosphate As Precursors to Produce Hydroxyapatite”. Jurnal Kimia Valensi 6, no. 2 (February 17, 2021): 192–197. Accessed February 19, 2026. https://journal.uinjkt.ac.id/valensi/article/view/15768.