@misc{indiciae0f29da7924d1,
  title = {Coal geology of the Wibaux-Beach area, Wibaux County, Montana, and Golden Valley County, North Dakota},
  author = {Robert C. Lewis and J.C. Harksen},
  year = {1980},
  doi = {10.3133/ofr80166},
  url = {https://pubs.usgs.gov/publication/ofr80166},
  note = {Source identifier: ofr80166}
}