@article{
  author = {arjemand manesh, ali akbar, Khorasani Parizi, Ebrahim, jalali, iraj},
  title = {Investigation of the changes in the administrative system of the Umayyad era},
  journal = {Journal of  History (Tarikh)},
  year = {2025},
  volume = {19},
  number = {74},
  pages = {1-15},
  doi = {}
}