Nikookar, Mohadeseh, Fekri, Roxana, Babaeianpoor, Marzieh, Akhavan, Peyman, Akhavan, peyman (2021). Presenting a model for explaining the impact of knowledge management on the lean of services based on the maturity level of organizational KM: A case study of Payam Noor University. *Modiriat-e- farda*, 20(66), 3-18.