@misc{indiciae24b8f1ca711d,
  title = {Chemical analyses of lignite from the Fort Union Formation, McCone, Richland, Dawson, and Wibaux counties, Montana, and Golden Valley County, North Dakota},
  author = {Ronald H. Affolter and Joseph R. Hatch},
  year = {1980},
  doi = {10.3133/ofr80179},
  url = {https://pubs.usgs.gov/publication/ofr80179},
  note = {Source identifier: ofr80179}
}