@article{177159,
      url = {http://digitallibrary.un.org/record/177159},
      title = {Quality measures of environment statistics : note /},
      publisher = {UN,},
      recid = {177159},
      pages = {7 p.},
      address = {Geneva :. 1992-09-23},
      year = {1992},
      month = {Sep},
}