@misc{indiciae5fd27c14a5bb,
  title = {Preliminary geologic map of the Bertha 2 NE Quadrangle, Campbell County, Wyoming},
  author = {E. J. McKay and E.R. Landis},
  year = {1974},
  doi = {10.3133/ofr74172},
  url = {https://pubs.usgs.gov/publication/ofr74172},
  note = {Source identifier: ofr74172}
}