@article{
  author = {ranjbar, mohsen, Bahak, Batoul},
  title = {Time and Space Changes of Air Pollutants Using GIS (Case Study: North Semnan Tehran},
  journal = {Geography},
  year = {2019},
  volume = {17},
  issue = {60},
  pages = {0-0},
  doi = {},
  url = {https://rimag.ir/fa/Article/8881}
}