@article{226658,
      author = {Cobban, William A., and Merewether, E. A.},
      url = {http://library.usi.edu/record/226658},
      title = {Stratigraphy and paleontology of mid-Cretaceous rocks in  Minnesota and contiguous areas /},
      publisher = {U.S. G.P.O. ;},
      recid = {226658},
      pages = {iv, 52 p. :},
      address = {Washington :},
      year = {1983},
}