@article{
  author = {Gholizadeh, Maryam, Sarlak, Mohammad Ali},
  title = {Identify knowledge Intensive Business Services of Qom Water and Wastewater},
  journal = {Modiriat-e- farda},
  year = {2020},
  volume = {18},
  number = {61},
  pages = {17-34},
  doi = {}
}