@article{226883,
      author = {Roehler, Henry W.},
      url = {http://library.usi.edu/record/226883},
      title = {Revised stratigraphic nomenclature for the Wasatch and  Green River formations of Eocene age, Wyoming, Utah, and  Colorado /},
      publisher = {U.S. G.P.O. ;},
      recid = {226883},
      pages = {iv, 38 p. :},
      address = {Washington, D.C. :},
      year = {1991},
}