@misc{indiciae252a638dec5c,
  title = {Organic geochemistry of oils from Oil Spring and Florence oil field near Canon City, Colorado},
  author = {P. G. Lillis and Michael P. Dolan and Augusta Warden and J. D. King},
  year = {1998},
  doi = {10.3133/ofr98617},
  url = {https://pubs.usgs.gov/publication/ofr98617},
  note = {Source identifier: ofr98617}
}