@article{Benjamin:138665,
      recid = {138665},
      author = {Benjamin, Gary L.},
      title = {Agricultural Letter},
      journal = {Agricultural Letter},
      address = {1975-04},
      number = {820-2016-53408},
      series = {1321},
      pages = {1},
      year = {1975},
      url = {http://ageconsearch.umn.edu/record/138665},
      doi = {https://doi.org/10.22004/ag.econ.138665},
}