@misc{indiciae1b6b12603242,
  title = {The Irvine oil field, Estill County, Kentucky},
  author = {E. W. Shaw},
  year = {1918},
  doi = {10.3133/b661d},
  url = {https://pubs.usgs.gov/publication/b661D},
  note = {Source identifier: b661D}
}