Assessment of the influence of calcination time and temperature on the com-pressive strength and crystallinity of hydroxyapatite obtained from avian egg-shell. Scién. Inge. [Internet]. 2025 Mar. 28 [cited 2026 Jul. 18];21(1):11-8. Available from: https://revistas.unitru.edu.pe/index.php/PGM/article/view/6289