@misc{indiciae72109c9e8ea1,
  title = {Availability of ground water in Clark, Estill, Madison, and Powell Counties, Kentucky (county group 19)},
  author = {Francis Ramey Hall and Wilbur Nathaniel Palmquist},
  year = {1960},
  doi = {10.3133/ha19},
  url = {https://pubs.usgs.gov/publication/ha19},
  note = {Source identifier: ha19}
}