@article{
  author = {farahani, ali, Arjman nia, Ali Akbar, Afrouz, Gholoamali, hasanzadeh, saeed},
  title = {Content analysis of mathematics books of mentally retarded students},
  journal = {Journal of Knowledge Studies},
  year = {2012},
  volume = {4},
  issue = {15},
  pages = {53-66},
  doi = {},
  url = {https://sanad.iau.ir/fa/Article/1041027}
}