@misc{indiciae247beee27a57,
  title = {Geologic map and sections of Lance Creek oil and gas field and vicinity, Niobrara County, Wyoming},
  author = {W.B. Kramer and C. E. Dobbin and Robert McMillan},
  year = {1943},
  doi = {10.3133/70047941},
  url = {https://pubs.usgs.gov/publication/70047941},
  note = {Source identifier: 70047941}
}