@article{618094,
      note = {Includes bibliographical references (p. 49-51).},
      url = {http://digitallibrary.un.org/record/618094},
      title = {Reactive nitrogen in the environment : too much or too  little of a good thing},
      publisher = {UNEP/DTIE ;},
      recid = {618094},
      pages = {51 p. :},
      address = {Paris :. 2007},
      year = {2007},
}