@article{637093,
      url = {http://digitallibrary.un.org/record/637093},
      title = {Updating of the 2nd revised edition of the Globally  Harmonized System of Classification and Labelling of  Chemicals (GHS) : health hezards : revision of chapter 3.4  with respect to strong versus weak sensitizers : note /},
      publisher = {UN,},
      recid = {637093},
      pages = {9 p. :},
      address = {Geneva :. 2008-08-15},
      year = {2008},
      month = {Aug},
}