@article{Sloan:286672,
      recid = {286672},
      author = {Sloan, Roby},
      title = {Agricultural Letter},
      journal = {Agricultural Letter},
      address = {1964-10-09},
      series = {773},
      month = {Oct},
      year = {1964},
      url = {http://ageconsearch.umn.edu/record/286672},
      doi = {https://doi.org/10.22004/ag.econ.286672},
}