@misc{indiciaed6f39d46f436,
  title = {Geologic map of the Elkhorn City quadrangle, Kentucky-Virginia and part of the Harman quadrangle, Pike County, Kentucky},
  author = {Donald Clayton Alvord and Ralph L. Miller},
  year = {1972},
  doi = {10.3133/gq951},
  url = {https://pubs.usgs.gov/publication/gq951},
  note = {Source identifier: gq951}
}