@article{197423,
      note = {Distributed to depository libraries in microfiche.},
      author = {Hereford, Richard.},
      url = {http://library.usi.edu/record/197423},
      title = {Surficial geology, geomorphology, and erosion of  archeologic sites along the Colorado River, eastern Grand  Canyon, Grand Canyon National Park, Arizona [microform] /},
      publisher = {U.S. Geological Survey ;},
      recid = {197423},
      pages = {1 v.},
      address = {[Reston, Va.] :},
      year = {1994},
}