@article{419422,
      recid = {419422},
      title = {Agricultural crop issues and policies [electronic  resource] /},
      publisher = {National Academy Press,},
      address = {Washington, D.C. :},
      pages = {xxi, 449 p. :},
      year = {1993},
      url = {http://library.usi.edu/record/419422},
}