@misc{indiciaecf9c4aaa286d,
  title = {Geology of the Canning quadrangle, South Dakota},
  author = {Dwight Raymond Crandell},
  year = {1954},
  doi = {10.3133/gq39},
  url = {https://pubs.usgs.gov/publication/gq39},
  note = {Source identifier: gq39}
}