@article{139651,
      recid = {139651},
      author = {MacKenzie, James J. and El-Ashry, Mohamed T.},
      title = {Air pollution's toll on forests and crops /},
      publisher = {Yale University Press,},
      address = {New Haven :},
      pages = {ix, 376 p. :},
      year = {1989},
      note = {"A World Resources Institute book."},
      url = {http://library.usi.edu/record/139651},
}