@misc{indiciae2a6da301fe83,
  title = {Journal of Research of the U. S. Geological Survey, 1977, volume 5, issue 4},
  year = {1977},
  doi = {10.3133/70007421},
  url = {https://pubs.usgs.gov/publication/70007421},
  note = {Source identifier: 70007421}
}