@misc{indiciae422b53a8d7be,
  title = {Midwestern Holocene paleoenvironments revealed by floodplain deposits in northeastern Iowa},
  author = {C. A. Chumbley and R. G. Baker and E. Arthur Bettis},
  year = {1990},
  doi = {10.1126/science.249.4966.272},
  url = {https://pubs.usgs.gov/publication/70016176},
  note = {Source identifier: 70016176}
}