@article{473452,
      recid = {473452},
      author = {Borchert, John R.,},
      title = {America's northern heartland [electronic resource] /},
      publisher = {University of Minnesota Press,},
      address = {Minneapolis :},
      pages = {viii, 250 p. :},
      year = {1987},
      note = {La couv. porte en plus : An economic and historical  geography of the Upper Midwest.},
      url = {http://library.usi.edu/record/473452},
}