Annisa, T., Azkiya, A., Fauzi, R., Nandiyanto, A. and Hofifah, S. 2021. Cost Analysis and Economic Evaluation for Manufacturing Hydroxyapatite Nanoparticles from Eggshell Waste. International Journal of Research and Applied Technology (INJURATECH). 1, 1 (Jun. 2021), 211-226. DOI:https://doi.org/10.34010/injuratech.v1i1.5669.