@misc{indiciae671d6cd6c7b5,
  title = {Map showing bedrock topography and subcrop of a selected bed beneath alluvial deposits of part of the Evansville South Quadrangle, Henderson County, Kentucky},
  author = {A. E. Smith and T.E. Ball},
  year = {1973},
  doi = {10.3133/i826},
  url = {https://pubs.usgs.gov/publication/i826},
  note = {Source identifier: i826}
}