@article{692745,
      note = {"Prepared for the United States Air Force."},
      author = {Pettyjohn, Stacie L.},
      url = {http://library.usi.edu/record/692745},
      title = {U.S. global defense posture, 1783-2011  [electronic  resource]/},
      recid = {692745},
      pages = {1 online resource (145 pages) :},
}