@misc{indiciaecf15e026dae5,
  title = {Geologic map and sections of Lance Creek oil and gas field and vicinity},
  author = {W.E. Kramer and C. E. Dobbin and R. McMillan},
  year = {1944},
  doi = {10.3133/ofr4442},
  url = {https://pubs.usgs.gov/publication/ofr4442},
  note = {Source identifier: ofr4442}
}