@misc{indiciaea09af1c6e475,
  title = {Chapter A8. Bottom-material samples},
  author = {Dean B. Radtke},
  year = {1998},
  doi = {10.3133/twri09a8},
  url = {https://pubs.usgs.gov/publication/twri09A8},
  note = {Source identifier: twri09A8}
}