@article{244816,
      url = {http://digitallibrary.un.org/record/244816},
      title = {Radioactive elements in ash and environmental implications  : the natural radioactivity of Russian steam coals and  their combustion products /},
      publisher = {UN,},
      recid = {244816},
      pages = {5 p. :},
      address = {Geneva :. 1994-06-28},
      year = {1994},
      month = {Jun},
}