@misc{indiciaecd4e56e99a24,
  title = {Preliminary diagrams showing correlation of coal beds in the Fort Union and Wasatch Formations across the northern Powder River basin, northeastern Wyoming and southeastern Montana},
  author = {William Craven Culbertson and Bion H. Kent and W. J. Mapel},
  year = {1979},
  doi = {10.3133/ofr791201},
  url = {https://pubs.usgs.gov/publication/ofr791201},
  note = {Source identifier: ofr791201}
}