@article{
  author = {Lajmorakramechari, شهلا, Mahdavi damghani, عبدالمجید, Liaghati, هومان},
  title = {The historical trend of changes in different sources of labor in the productivity of agricultural lands in Iran's wheat production ecosystems (1921-2020)},
  journal = {Journal of Crop Production Research (JCPR)},
  year = {2023},
  volume = {14},
  number = {4},
  pages = {511-534},
  doi = {}
}