@article{244140,
      url = {http://digitallibrary.un.org/record/244140},
      title = {Concentration indices in the European coal industries in  1993 : replies to the questionnaire /},
      publisher = {UN,},
      recid = {244140},
      pages = {5 p. :},
      address = {Geneva :. 1994-07-22},
      year = {1994},
      month = {Jul},
}