@misc{indiciae316f63e03de3,
  title = {Geochemistry of amphibolites from the central Beartooth Mountains, Montana-Wyoming},
  author = {Theodore J. Armbrustmacher and Frank S. Simons},
  year = {1977},
  url = {https://pubs.usgs.gov/publication/70232940},
  note = {Source identifier: 70232940}
}