@article{94216,
      url = {http://digitallibrary.un.org/record/94216},
      title = {Report of the 19th session : Economic Commission for  Europe, Senior Advisers to ECE Governments on Environmental  and Water Problems, Working Party on Air Pollution  Problems.},
      publisher = {UN,},
      recid = {94216},
      pages = {10 p.},
      address = {Geneva :. 1990-07-06},
      year = {1990},
      month = {Jul},
}