@misc{indiciaea599e514dd85,
  title = {USGS certificate of analysis; coal, lower Bakerstown CLB-1},
  author = {S. A. Wilson},
  year = {1997},
  doi = {10.3133/ofr97299},
  url = {https://pubs.usgs.gov/publication/ofr97299},
  note = {Source identifier: ofr97299}
}