@misc{indiciaeecf79fe25cb6,
  title = {Preliminary geologic map and coal resources of the Pleasantdale Quadrangle, Campbell County, Wyoming},
  author = {S.L. Grazis},
  year = {1974},
  doi = {10.3133/ofr7425},
  url = {https://pubs.usgs.gov/publication/ofr7425},
  note = {Source identifier: ofr7425}
}