@misc{indiciae65d189146487,
  title = {Engineering geologic map of the Indian Hills Quadrangle, Jefferson County, Colorado},
  author = {R. D. Miller and Bruce Bryant},
  year = {1976},
  doi = {10.3133/i980},
  url = {https://pubs.usgs.gov/publication/i980},
  note = {Source identifier: i980}
}