@misc{indiciae1a4a347a76a1,
  title = {Preliminary report on the coal resources of the Dickinson area, Billings, Dunn, and Stark Counties, North Dakota},
  author = {Michael L. Menge},
  year = {1977},
  doi = {10.3133/ofr77482},
  url = {https://pubs.usgs.gov/publication/ofr77482},
  note = {Source identifier: ofr77482}
}