@misc{indiciae33ffc23f9d4b,
  title = {Map Showing Areas Containing Swelling Clay in the Morrison Quadrangle, Jefferson County, Colorado},
  author = {Glenn R. Scott},
  year = {1972},
  doi = {10.3133/i790c},
  url = {https://pubs.usgs.gov/publication/i790C},
  note = {Source identifier: i790C}
}