@misc{indiciaea30571f461fc,
  title = {Geologic map of the Belfry quadrangle, Pike County, Kentucky},
  author = {Charles L. Rice and Russell G. Ping and J.L. Barr},
  year = {1977},
  doi = {10.3133/gq1369},
  url = {https://pubs.usgs.gov/publication/gq1369},
  note = {Source identifier: gq1369}
}