@article{219984,
      recid = {219984},
      author = {Du Bray, E. A.},
      title = {Stratigraphic identification of middle Tertiary ash-flow  tuffs using trace-element abundances, Worthington  Mountains, Nevada [microform] /},
      publisher = {U.S. Dept. of the Interior, U.S. Geological Survey,},
      address = {[Reston, Va.] :},
      pages = {1 v. :},
      year = {1995},
      note = {Shipping list no.: 97-0317-M.},
      url = {http://library.usi.edu/record/219984},
}