@article{Benjamin:136313,
      recid = {136313},
      author = {Benjamin, Gary L. and Singer, Mike A.},
      title = {Agricultural Letter},
      journal = {Agricultural Letter},
      address = {1994-07},
      number = {820-2016-53188},
      series = {1854},
      pages = {4},
      year = {1994},
      url = {http://ageconsearch.umn.edu/record/136313},
      doi = {https://doi.org/10.22004/ag.econ.136313},
}