@misc{indiciae50479ba9e168,
  title = {Coal quality of a core from the Wyodak-Anderson coal bed, southeastern Powder River basin, Wyoming; a preliminary study},
  author = {Sharon S. Crowley and R.W. Stanton and Peter D. Warwick},
  year = {1989},
  doi = {10.3133/ofr8981},
  url = {https://pubs.usgs.gov/publication/ofr8981},
  note = {Source identifier: ofr8981}
}