@misc{indiciae6222d1462f8e,
  title = {Geochemistry and origin of combustible gas in Crested Butte, Gunnison County, Colorado},
  author = {D. D. Rice and C. N. Threlkeld and J.M. Soule},
  year = {1990},
  doi = {10.3133/ofr90324},
  url = {https://pubs.usgs.gov/publication/ofr90324},
  note = {Source identifier: ofr90324}
}