@article{177659,
      note = {Prepared by Jack E. Triplett.},
      author = {Triplett, Jack E.},
      url = {http://digitallibrary.un.org/record/177659},
      title = {Economic concepts for economic classifications /},
      publisher = {UN,},
      recid = {177659},
      pages = {8 p.},
      address = {Geneva :. 1993-04-29},
      year = {1993},
      month = {Apr},
}