@article{110480,
      recid = {110480},
      author = {Mackintosh, Barry.},
      title = {Interpretation in the National Park Service : a historical  perspective /},
      publisher = {History Division, National Park Service, Dept. of the  Interior,},
      address = {Washington, D.C. :},
      pages = {vi, 117 p. :},
      year = {1986},
      url = {http://library.usi.edu/record/110480},
}