@article{Sloan:286940,
      recid = {286940},
      author = {Sloan, Roby},
      title = {Agricultural Letter},
      journal = {Agricultural Letter},
      address = {1969-12-19},
      series = {1044},
      month = {Dec},
      year = {1969},
      url = {http://ageconsearch.umn.edu/record/286940},
      doi = {https://doi.org/10.22004/ag.econ.286940},
}