@article{Urquhart:286100,
      recid = {286100},
      author = {Urquhart, Norman R.},
      title = {Agricultural Letter},
      journal = {Agricultural Letter},
      address = {1951-08-24},
      series = {106},
      month = {Aug},
      year = {1951},
      url = {http://ageconsearch.umn.edu/record/286100},
      doi = {https://doi.org/10.22004/ag.econ.286100},
}