@article{319857,
      recid = {319857},
      author = {Breining, Greg.},
      title = {Super volcano : the ticking time bomb beneath Yellowstone  National Park /},
      publisher = {Voyageur Press,},
      address = {St. Paul, MN :},
      pages = {256 p. :},
      year = {2007},
      url = {http://library.usi.edu/record/319857},
}