@article{53718,
      author = {Powell, John Wesley,},
      url = {http://library.usi.edu/record/53718},
      title = {The Colorado River Region and John Wesley Powell : a  collection of papers honoring Powell on the 100th  anniversary of his exploration of the Colorado River,  1869-1969.},
      publisher = {U.S. Govt. Print. Off.,},
      recid = {53718},
      pages = {145 p. :},
      address = {Washington :},
      year = {1969},
}