@article{Benjamin:138570,
      recid = {138570},
      author = {Benjamin, Gary L.},
      title = {Agricultural Letter},
      journal = {Agricultural Letter},
      address = {1974-10},
      number = {820-2016-53127},
      series = {1296},
      pages = {1},
      year = {1974},
      url = {http://ageconsearch.umn.edu/record/138570},
      doi = {https://doi.org/10.22004/ag.econ.138570},
}