@misc{indiciae0a05aca9c263,
  title = {The Great Falls coal field, Montana. Coals of Carbon County, Mont. The coal fields of parts of Dawson, Rosebud, and Custer Counties, Mont.},
  author = {C.A. Fisher and N. H. Darton and A.G. Leonard},
  year = {1907},
  doi = {10.3133/b316c},
  url = {https://pubs.usgs.gov/publication/b316C},
  note = {Source identifier: b316C}
}