@misc{indiciaeabfd61cf9731,
  title = {Preliminary structure map of the Little Hickman Quadrangle, central Kentucky},
  author = {Don E. Wolcott},
  year = {1968},
  doi = {10.3133/ofr68333},
  url = {https://pubs.usgs.gov/publication/ofr68333},
  note = {Source identifier: ofr68333}
}