@misc{indiciae66dea92984f4,
  title = {Analyses of rocks from the laboratory of the United States Geological survey 1880-1899},
  author = {Frank Wigglesworth Clarke},
  year = {1900},
  doi = {10.3133/b168},
  url = {https://pubs.usgs.gov/publication/b168},
  note = {Source identifier: b168}
}