@misc{indiciae6c9af937ceff,
  title = {Journal of Research of the U. S. Geological Survey, 1973, volume 1, issue 2},
  year = {1973},
  doi = {10.3133/70007395},
  url = {https://pubs.usgs.gov/publication/70007395},
  note = {Source identifier: 70007395}
}