@article{Benjamin:287135,
      recid = {287135},
      author = {Benjamin, Gary L.},
      title = {Agricultural Letter},
      journal = {Agricultural Letter},
      address = {1973-12-21},
      series = {1253},
      month = {Dec},
      year = {1973},
      url = {http://ageconsearch.umn.edu/record/287135},
      doi = {https://doi.org/10.22004/ag.econ.287135},
}