@article{Benjamin:138103,
      recid = {138103},
      author = {Benjamin, Gary L. and Miller, Jeffrey L.},
      title = {Agricultural Letter},
      journal = {Agricultural Letter},
      address = {1981-11-04},
      number = {820-2016-53229},
      series = {1559},
      pages = {4},
      month = {Nov},
      year = {1981},
      url = {http://ageconsearch.umn.edu/record/138103},
      doi = {https://doi.org/10.22004/ag.econ.138103},
}