@misc{indiciae4113cb459fb6,
  title = {Colorimetric determinations of traces of bismuth in rocks},
  author = {Frederick Norville Ward and Harry E. Crowe},
  year = {1956},
  doi = {10.3133/b1036i},
  url = {https://pubs.usgs.gov/publication/b1036I},
  note = {Source identifier: b1036I}
}