@misc{indiciae99c4666aac9d,
  title = {Geologic map and coal resources of the Scaper Reservoir Quadrangle, Campbell County, Wyoming},
  author = {S.L. Grazis},
  year = {1977},
  doi = {10.3133/coal77},
  url = {https://pubs.usgs.gov/publication/coal77},
  note = {Source identifier: coal77}
}