@misc{indiciae73390f434b47,
  title = {Quaternary geologic map of the Sudbury 4° x 6° quadrangle, United States and Canada},
  author = {David S. Fullerton and Edward V. Sado and C. L. Baker and William R. Farrand},
  year = {1993},
  doi = {10.3133/i1420(nl17)},
  url = {https://pubs.usgs.gov/publication/i1420(NL17)},
  note = {Source identifier: i1420(NL17)}
}