@article{101492,
      note = {At head of title: Global Environment Monitoring System.},
      url = {http://digitallibrary.un.org/record/101492},
      title = {Urban air pollution 1973-1980 /},
      publisher = {WHO,},
      recid = {101492},
      pages = {vii, 96 p. :},
      address = {Geneva :. 1984},
      year = {1984},
}