@article{175916,
      url = {http://digitallibrary.un.org/record/175916},
      title = {UN/EDIFACT directories progression /},
      publisher = {UN,},
      recid = {175916},
      pages = {5 p. :},
      address = {Geneva :. 1993-08-09},
      year = {1993},
      month = {Aug},
}