@misc{indiciae195c3155a916,
  title = {About the geologic map in the National Atlas of the United States of America},
  author = {John C. Reed and Charles A. Bush},
  year = {2007},
  doi = {10.3133/cir1300},
  url = {https://pubs.usgs.gov/publication/cir1300},
  note = {Source identifier: cir1300}
}