@article{240762,
      note = {(Supersedes Open-File Report 91-500)},
      author = {Blackwell, Cassandra D.},
      url = {http://library.usi.edu/record/240762},
      title = {Identification codes for organizations listed in  computerized data systems of the U.S. Geological Survey  [microform] /},
      publisher = {U.S. Geological Survey ;},
      recid = {240762},
      pages = {iv, 313 p. ;},
      address = {Reston, VA :},
      year = {1993},
}