@article{Fruin:13400,
      recid = {13400},
      author = {Fruin, Jerry E. and Levins, Richard A.},
      title = {TRANSPORTATION COSTS OF FERTILIZER USED IN MINNESOTA},
      address = {1979},
      number = {1701-2016-138748},
      series = {Staff Paper P79-5},
      pages = {20},
      year = {1979},
      url = {http://ageconsearch.umn.edu/record/13400},
      doi = {https://doi.org/10.22004/ag.econ.13400},
}