@article{64783,
      recid = {64783},
      author = {Rydberg, Per Axel, and Howe, Marshall Avery,},
      title = {Flora of the prairies and plains of central North  America,},
      publisher = {The New York Botanical Garden,},
      address = {New York,},
      pages = {vii, 969 p.},
      year = {1932},
      note = {A manual of Pteridophyta and Spermatophyta.},
      url = {http://library.usi.edu/record/64783},
}