@misc{indiciaed72ab75dab46,
  title = {Geologic map of the Arvada quadrangle, Colorado},
  author = {Robert M. Lindvall},
  year = {1970},
  doi = {10.3133/ofr70198},
  url = {https://pubs.usgs.gov/publication/ofr70198},
  note = {Source identifier: ofr70198}
}