@misc{indiciae63446b6fdd9e,
  title = {Genesis of oil in metalliferous veins, San Juan Mountains, Colorado},
  author = {Peter M. Gerrild},
  year = {1972},
  doi = {10.3133/ofr72129},
  url = {https://pubs.usgs.gov/publication/ofr72129},
  note = {Source identifier: ofr72129}
}