Parajuli, K., Panchen, N. and Gautam, S. 2023. Facile Extraction of Natural Hydroxyapatite (HA) from Biowaste and Its Characterizations. Pragya Darshan प्रज्ञा दर्शन. 5, 2 (Nov. 2023), 85–89. DOI:https://doi.org/10.3126/pdmdj.v5i2.59617.