@article{7837,
      author = {Muench, David. and Frome, Michael.},
      url = {http://library.usi.edu/record/7837},
      title = {The national parks /},
      publisher = {Rand McNally,},
      recid = {7837},
      pages = {144 p. :},
      address = {Chicago :},
      year = {1977},
}