@misc{indiciaec2cd178c1135,
  title = {The Bisbee Group of the Tombstone Hills, southeastern Arizona — Stratigraphy, structure, metamorphism, and mineralization},
  author = {E. R. Force},
  year = {1996},
  doi = {10.3133/b2042b},
  url = {https://pubs.usgs.gov/publication/b2042B},
  note = {Source identifier: b2042B}
}