@misc{indiciaeebf94ea83d74,
  title = {Geology of the Comstock-Indian Wells area, Val Verde, Terrell, and Brewster Counties, Texas},
  author = {V. L. Freeman},
  year = {1968},
  doi = {10.3133/pp594k},
  url = {https://pubs.usgs.gov/publication/pp594K},
  note = {Source identifier: pp594K}
}