@misc{indiciae1c642fc238d3,
  title = {Geologic map of the eastern Beaver Divide-Gas Hills area, Fremont and Natrona Counties, Wyoming},
  author = {Franklyn B. Van Houten and Joseph Leonard Weitz},
  year = {1956},
  doi = {10.3133/om180},
  url = {https://pubs.usgs.gov/publication/om180},
  note = {Source identifier: om180}
}