@article{167637,
      author = {Frey, Robert C.},
      url = {http://library.usi.edu/record/167637},
      title = {Middle and Upper Ordovician nautiloid cephalopods of the  Cincinnati arch region of Kentucky, Indiana, and Ohio /},
      publisher = {U.S. G.P.O.,},
      recid = {167637},
      pages = {1 v. (various pagings) :},
      address = {Washington, D.C. :},
      year = {1995},
}