@article{Sloan:286833,
      recid = {286833},
      author = {Sloan, Roby},
      title = {Agricultural Letter},
      journal = {Agricultural Letter},
      address = {1967-11-24},
      series = {936},
      month = {Nov},
      year = {1967},
      url = {http://ageconsearch.umn.edu/record/286833},
      doi = {https://doi.org/10.22004/ag.econ.286833},
}