M. Elamathe et al. 2021. Instrumentation Time of Rotary Files and Manual Files in Pulpectomy of Primary Molars: A Systematic Review. International Journal of Pharma and Bio Sciences. 12, 1 (Mar. 2021), 21–29. DOI:https://doi.org/10.22376/ijpbs.2020.12.1.b21-29.