@article{217704,
      note = {Cover title.},
      author = {Varnes, David J.},
      url = {http://library.usi.edu/record/217704},
      title = {Measurement of ridge-spreading movements (Sackungen) at  Bald Eagle Mountain, Lake County, Colorado, 1975-1989  [microform] /},
      publisher = {Dept. of the Interior, U.S. Geological Survey,},
      recid = {217704},
      pages = {i, 13 leaves :},
      address = {[Denver, CO] :},
      year = {1990},
}