@article{268321,
      recid = {268321},
      author = {Petrides, George A. and Wehr, Janet.},
      title = {A field guide to eastern trees eastern United States and  Canada, including the Midwest / [electronic resource] :},
      publisher = {Houghton Mifflin,},
      address = {Boston :},
      pages = {1 online resource (xvii, 424 p.) :},
      year = {1998},
      note = {"Sponsored by the National Audubon Society, the National  Wildlife Federation, and the Roger Tory Peterson  Institute."},
      url = {http://library.usi.edu/record/268321},
}