@article{108919,
      note = {Prepared by the United States Geological Survey.},
      url = {http://digitallibrary.un.org/record/108919},
      title = {Guide to standard technical specifications for aerial  photography (revision) : paper /},
      publisher = {UN,},
      recid = {108919},
      pages = {31 p. :},
      address = {[New York] :. 1990-12-20},
      year = {1990},
      month = {Dec},
}