@article{99056,
      note = {Based on papers presented at the Sixth Annual Spring  Systematics Symposium, sponsored and held at the Field  Museum of Natural History in Chicago, on May 13-14, 1983.},
      author = {Nitecki, Matthew H.},
      url = {http://library.usi.edu/record/99056},
      title = {Extinctions /},
      publisher = {University of Chicago Press,},
      recid = {99056},
      pages = {354 p. :},
      address = {Chicago :},
      year = {1984},
}