@article{59311,
      author = {Schopf, Thomas J. M.},
      url = {http://library.usi.edu/record/59311},
      title = {Models in paleobiology,},
      publisher = {Freeman, Cooper},
      recid = {59311},
      pages = {vi, 250 p.},
      address = {San Francisco,},
      year = {1972},
}