@misc{indiciae8a9317b221d4,
  title = {Geologic map of the Arvada quadrangle, Adams, Denver, and Jefferson Counties, Colorado},
  author = {R. M. Lindvall},
  year = {1972},
  doi = {10.3133/mf348},
  url = {https://pubs.usgs.gov/publication/mf348},
  note = {Source identifier: mf348}
}