@misc{indiciae040c75cae74f,
  title = {Digital Raster Graphics Fact Sheet},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1994},
  doi = {10.3133/fs05994},
  url = {https://pubs.usgs.gov/publication/fs05994},
  note = {Source identifier: fs05994}
}