@article{454051,
      note = {"May 1989."},
      author = {Butowsky, Harry A.},
      url = {http://library.usi.edu/record/454051},
      title = {Astronomy and astrophysics national historic landmark  theme study /},
      publisher = {Dept. of the Interior, National Park Service,},
      recid = {454051},
      pages = {394 p. :},
      address = {Washington, D.C. :},
      year = {1989},
}