@article{Benjamin:138170,
      recid = {138170},
      author = {Benjamin, Gary L.},
      title = {Agricultural Letter},
      journal = {Agricultural Letter},
      address = {1980-03-07},
      number = {820-2016-53331},
      series = {1520},
      pages = {4},
      month = {Mar},
      year = {1980},
      url = {http://ageconsearch.umn.edu/record/138170},
      doi = {https://doi.org/10.22004/ag.econ.138170},
}