@misc{indiciaeb4f5cbf6f8e1,
  title = {Reconnaissance geologic map of the Beulah NE quadrangle, Pueblo County, Colorado},
  author = {G. R. Scott},
  year = {1972},
  doi = {10.3133/mf352},
  url = {https://pubs.usgs.gov/publication/mf352},
  note = {Source identifier: mf352}
}