@misc{indiciae9f24048b8dec,
  title = {Continental diatoms as indicators of long-term environmental change},
  author = {J. Platt Bradbury},
  year = {1999},
  doi = {10.1017/cbo9780511613005.008},
  url = {https://pubs.usgs.gov/publication/70074772},
  note = {Source identifier: 70074772}
}