@misc{indiciaef586f2f40e75,
  title = {Memorandum on the geology and ground-water resources of the Calvert City-Gilbertsville area, Marshall County, Kentucky},
  author = {Henry L. Pree and William H. Walker},
  year = {1952},
  doi = {10.3133/ofr52115},
  url = {https://pubs.usgs.gov/publication/ofr52115},
  note = {Source identifier: ofr52115}
}