@article{347764,
      note = {Description based on print version record.},
      author = {Tweed, William C.},
      url = {http://library.usi.edu/record/347764},
      title = {Uncertain path a search for the future of national parks /  [electronic resource] :},
      publisher = {University of California Press,},
      recid = {347764},
      pages = {1 online resource (xi, 236 p.) :},
      address = {Berkeley :},
      year = {2010},
}