@article{
  author = {shabanzadeh, mehdi, peykanei, Gholamreza, hoseini, seyed safdar, yazdanei, saeid},
  title = {Change from the purchasing price policy to the guaranteed price policy and its effects on cropping pattern in Qazvin plain},
  journal = {Agricultural Economics Research},
  year = {2019},
  volume = {11},
  issue = {1},
  pages = {101-130},
  doi = {},
  url = {https://sanad.iau.ir/fa/Article/1159543}
}