@article{Benjamin:287002,
      recid = {287002},
      author = {Benjamin, Gary L.},
      title = {Agricultural Letter},
      journal = {Agricultural Letter},
      address = {1971-03-26},
      series = {1110},
      month = {Mar},
      year = {1971},
      url = {http://ageconsearch.umn.edu/record/287002},
      doi = {https://doi.org/10.22004/ag.econ.287002},
}