@misc{indiciae72c1f2b38857,
  title = {The Menifee gas field and the Ragland oil field, Kentucky},
  author = {M. J. Munn},
  year = {1913},
  doi = {10.3133/b531a},
  url = {https://pubs.usgs.gov/publication/b531A},
  note = {Source identifier: b531A}
}