@article{243702,
      url = {http://digitallibrary.un.org/record/243702},
      title = {Existing standards on permissible concentration of noxious  components in gas combustion products : draft questionnaire  /},
      publisher = {UN,},
      recid = {243702},
      pages = {2 p. :},
      address = {Geneva :. 1995-08-01},
      year = {1995},
      month = {Aug},
}