@misc{indiciae45d873abd07d,
  title = {Analyses of rocks and minerals from the laboratory of the United States Geological Survey, 1914-36},
  author = {Roger Clark Wells},
  year = {1937},
  doi = {10.3133/b878},
  url = {https://pubs.usgs.gov/publication/b878},
  note = {Source identifier: b878}
}