@article{Farris:303417,
      recid = {303417},
      author = {Farris, Donald E.},
      title = {Preface},
      address = {1969},
      year = {1969},
      note = {Vertical coordination in Livestock Marketing, March 11-14,  1969, Houston, Texas},
      url = {http://ageconsearch.umn.edu/record/303417},
      doi = {https://doi.org/10.22004/ag.econ.303417},
}