Cost Analysis and Economic Evaluation for Manufacturing Hydroxyapatite Nanoparticles from Eggshell Waste. International Journal of Research and Applied Technology (INJURATECH), [S. l.], v. 1, n. 1, p. 211–226, 2021. DOI: 10.34010/injuratech.v1i1.5669. Disponível em: https://ojs.unikom.ac.id/index.php/injuratech/article/view/5669. Acesso em: 26 apr. 2025.