@misc{indiciaee08e18f536bf,
  title = {1:2,000,000-scale digital line graph (DLG) data},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1992},
  doi = {10.3133/ds4},
  url = {https://pubs.usgs.gov/publication/ds4},
  note = {Source identifier: ds4}
}