@misc{indiciaecbe75fc25ced,
  title = {Geologic investigation of the Northwest Scobey lignite area, Daniels and Valley counties, Montana},
  author = {James R. Gruber},
  year = {1980},
  doi = {10.3133/ofr80486},
  url = {https://pubs.usgs.gov/publication/ofr80486},
  note = {Source identifier: ofr80486}
}