@misc{indiciae88ac069ad626,
  title = {Maps showing sea-floor topography, depth to bedrock, and sediment thickness, Penobscot Bay, Maine},
  author = {Harley J. Knebel and Kathryn M. Scanlon},
  year = {1985},
  doi = {10.3133/mf1751},
  url = {https://pubs.usgs.gov/publication/mf1751},
  note = {Source identifier: mf1751}
}