@article{218603,
      note = {"U.S. Department of the Interior, U.S. Geological Survey"},
      author = {Singer, Francis J. and Gudorf, Michelle A.},
      url = {http://library.usi.edu/record/218603},
      title = {Restoration of bighorn sheep metapopulations in and near  15 national parks : conservation of a severely fragmented  species /},
      publisher = {Systems Support Division of the Midcontinent Ecological  Science Center, Biological Resources Division of the U.S.  Geological Survey,},
      recid = {218603},
      pages = {2 v. :},
      address = {Fort Collins, Colo. :},
      year = {1999},
}