@article{198910,
      note = {"92-507-A is Documentation, B is Command file (1 disk), C  is Explanation sheet database (1 disk), and D-O, Geologic  map database (12 disks).},
      author = {Green, Gregory N.},
      url = {http://library.usi.edu/record/198910},
      title = {The digital geologic map of Colorado in ARC/INFO format  [microform] /},
      publisher = {U.S. Dept. of the Interior, Geological Survey :},
      recid = {198910},
      pages = {9 leaves ;},
      address = {[Denver, Colo. :},
      year = {1992},
}