@article{229293,
      note = {Prepared in cooperation with the U.S. Bureau of  Reclamation.},
      author = {Schmidt, John C., and Graf, Julia B.},
      url = {http://library.usi.edu/record/229293},
      title = {Aggradation and degradation of alluvial sand deposits,  1965 to 1986, Colorado River, Grand Canyon National Park,  Arizona /},
      publisher = {U.S. G.P.O. ;},
      recid = {229293},
      pages = {iv, 74 p. :},
      address = {Washington :},
      year = {1990},
}