@misc{indiciae7ef2bbd3a384,
  title = {Ground-water resources of the Hopkinsville quadrangle, Kentucky},
  author = {Eugene H. Walker},
  year = {1956},
  doi = {10.3133/wsp1328},
  url = {https://pubs.usgs.gov/publication/wsp1328},
  note = {Source identifier: wsp1328}
}