@article{55851,
      note = {Prepared by D.J. McArthur.},
      author = {McArthur, D.J. and Steeves, R.R.},
      url = {http://digitallibrary.un.org/record/55851},
      title = {Impact of the active control system on survey control  networks /},
      publisher = {UN,},
      recid = {55851},
      pages = {10 p. :},
      address = {[New York] :. 1989-01-13},
      year = {1989},
      month = {Jan},
}