@misc{indiciae545640df7fd6,
  title = {Descriptive logs of exploratory holes drilled during 1952 by the U.S. Geological Survey in Dubuque County, Iowa},
  author = {Arthur E. Flint and Charles E. Brown},
  year = {1953},
  doi = {10.3133/ofr5372},
  url = {https://pubs.usgs.gov/publication/ofr5372},
  note = {Source identifier: ofr5372}
}