@misc{indiciaef4336736a7df,
  title = {GSDRAW and GSMAP version 3.0 : prototype programs for the IBM PC or compatible microcomputers to assist compilation and publication of geologic maps and illustrations},
  author = {Gary I. Selner and Richard B. Taylor and Bruce R. Johnson},
  year = {1986},
  doi = {10.3133/ofr86447a},
  url = {https://pubs.usgs.gov/publication/ofr86447A},
  note = {Source identifier: ofr86447A}
}