@article{257623,
      note = {Cover title.},
      author = {Desborough, George A. and Yager, Douglas B.},
      url = {http://library.usi.edu/record/257623},
      title = {Acid-neutralizing potential of igneous bedrocks in the  Animas River headwaters, San Juan County, Colorado  [microform] /},
      publisher = {U.S. Dept. of the Interior, U.S. Geological Survey,},
      recid = {257623},
      pages = {14 leaves :},
      address = {Denver, Colo. :},
      year = {2000},
}