@misc{indiciaea88a88ffb2b1,
  title = {Coal resource occurrence and coal development potential maps of the Arvada Quadrangle, Sheridan County, Wyoming},
  author = {IntraSearch Inc.},
  year = {1979},
  doi = {10.3133/ofr79166},
  url = {https://pubs.usgs.gov/publication/ofr79166},
  note = {Source identifier: ofr79166}
}