@misc{indiciae9c14148e8940,
  title = {The architecture of the porphyry-metal system as a prospecting stratagem in the Southern Rocky Mountains},
  author = {George J. Neuerburg},
  year = {1978},
  doi = {10.3133/ofr78130},
  url = {https://pubs.usgs.gov/publication/ofr78130},
  note = {Source identifier: ofr78130}
}