@misc{indiciae2a28da7d5ac5,
  title = {Metamorphism and the origin of the granitic rocks in the Northgate district, Colorado},
  author = {Thomas August Steven},
  year = {1950},
  doi = {10.3133/ofr5051},
  url = {https://pubs.usgs.gov/publication/ofr5051},
  note = {Source identifier: ofr5051}
}