@misc{indiciaec8f96cd628bd,
  title = {Megascopic lithologic studies of coals in the Powder River basin in Wyoming and in adjacent basins in Wyoming and North Dakota},
  author = {Michael H. Trippi and Gary D. Stricker and Romeo M. Flores and Ronald W. Stanton and Lora A. Chiehowsky and Timothy A. Moore},
  year = {2010},
  doi = {10.3133/ofr20101114},
  url = {https://pubs.usgs.gov/publication/ofr20101114},
  note = {Source identifier: ofr20101114}
}