@article{196673,
      note = {Cover title.},
      author = {Howard, Keith A.},
      url = {http://library.usi.edu/record/196673},
      title = {A guide to Miocene extension and magmatism in the lower  Colorado River region, Nevada, Arizona, and California  [microform] /},
      publisher = {U.S. Dept. of the Interior, U.S. Geological Survey ;},
      recid = {196673},
      pages = {54 p. :},
      address = {[Menlo Park, Calif.?] :},
      year = {1994},
}