@article{Sloan:286628,
      recid = {286628},
      author = {Sloan, Roby},
      title = {Agricultural Letter},
      journal = {Agricultural Letter},
      address = {1963-12-06},
      series = {729},
      month = {Dec},
      year = {1963},
      url = {http://ageconsearch.umn.edu/record/286628},
      doi = {https://doi.org/10.22004/ag.econ.286628},
}