@misc{indiciae415d4cbc5a84,
  title = {Journal of Research of the U. S. Geological Survey, 1977, volume 5, issue 2},
  year = {1977},
  doi = {10.3133/70007419},
  url = {https://pubs.usgs.gov/publication/70007419},
  note = {Source identifier: 70007419}
}