@misc{indiciae45a2c43ab9b0,
  title = {Geologic map and coal sections of the Lay quadrangle, Moffat County, Colorado},
  author = {Michael E. Brownfield and G.L. Prost},
  year = {1979},
  doi = {10.3133/ofr791679},
  url = {https://pubs.usgs.gov/publication/ofr791679},
  note = {Source identifier: ofr791679}
}