@article{244141,
      url = {http://digitallibrary.un.org/record/244141},
      title = {Concentration indices in the European coal industry :  information /},
      publisher = {UN,},
      recid = {244141},
      pages = {8 p. :},
      address = {Geneva :. 1994-07-21},
      year = {1994},
      month = {Jul},
}