@misc{indiciae219187ce4d5c,
  title = {Journal of Research of the U. S. Geological Survey, 1975, volume 3, issue 6},
  year = {1975},
  doi = {10.3133/70007411},
  url = {https://pubs.usgs.gov/publication/70007411},
  note = {Source identifier: 70007411}
}