@article{179350,
      url = {http://digitallibrary.un.org/record/179350},
      title = {Draft preamble for a preliminary draft 2nd Sulphur  Protocol : proposal /},
      publisher = {UN,},
      recid = {179350},
      pages = {2 p.},
      address = {Geneva :. 1993-12-15},
      year = {1993},
      month = {Dec},
}