@article{61554,
      note = {Includes index.},
      author = {Stebbins, G. Ledyard},
      url = {http://library.usi.edu/record/61554},
      title = {Flowering plants : evolution above the species level /},
      publisher = {Belknap Press of Harvard University Press,},
      recid = {61554},
      pages = {xviii, 399 p. :},
      address = {Cambridge, Mass. :},
      year = {1974},
}