@misc{indiciae48e2579d25b4,
  title = {Interfingering of the Frontier Formation and Aspen Shale, Cumberland Gap, Wyoming.},
  author = {J. M'gonigle},
  year = {1982},
  url = {https://pubs.usgs.gov/publication/70011766},
  note = {Source identifier: 70011766}
}