@article{131937,
      author = {Silver, Cheryl Simon. and DeFries, Ruth S.},
      url = {http://library.usi.edu/record/131937},
      title = {One earth, one future : our changing global environment /},
      publisher = {National Academy Press,},
      recid = {131937},
      pages = {xiii, 196 p. :},
      address = {Washington, D.C. :},
      year = {1990},
}