@article{Benjamin:138703,
      recid = {138703},
      author = {Benjamin, Gary L.},
      title = {Agricultural Letter},
      journal = {Agricultural Letter},
      address = {1975-08},
      number = {820-2016-53433},
      series = {1338},
      pages = {2},
      year = {1975},
      url = {http://ageconsearch.umn.edu/record/138703},
      doi = {https://doi.org/10.22004/ag.econ.138703},
}