@article{102117,
      url = {http://digitallibrary.un.org/record/102117},
      title = {Transformation of coal into secondary energy sources :  replies to the questionnaire /},
      publisher = {UN,},
      recid = {102117},
      pages = {9 p. :},
      address = {Geneva :. 1983-03-22},
      year = {1983},
      month = {Mar},
}