@article{407628,
      url = {http://digitallibrary.un.org/record/407628},
      title = {Exposures from natural radiation sources. Annex B},
      publisher = {UN,},
      recid = {407628},
      pages = {91 p. :},
      address = {Vienna :. 2000-01-13},
      year = {2000},
      month = {Jan},
}