URL dokumen:
https://prisma.simaster.ugm.ac.id/karya_files/characteristics-of-bioceramic-hydroxyapatite-based-on-sand-lobster-shells--panulirus-homarus--as-sources-of-calcium-with-optimal-calcination-dcfcd07e645d245babe887e5e2daa016/44190716-ade6-11ee-abf0-e4434b0aade8