@article{473075,
      url = {http://library.usi.edu/record/473075},
      title = {The global positioning system for the geosciences summary  and proceedings of a workshop on improving the GPS  reference infrastructure for earth, oceanic, and  atmospheric science applications / [electronic resource] :},
      publisher = {National Academy Press,},
      recid = {473075},
      pages = {x, 239 p. :},
      address = {Washington, D.C. :},
      year = {1997},
}