@misc{indiciae1140e1d4827a,
  title = {Compilation of proximate and ultimate analyses of coal, impure coal, and carbonaceous mudrock (Pennsylvanian) from Massachusetts and Rhode Island},
  author = {Paul C. Lyons and Harry B. Chase},
  year = {1979},
  doi = {10.3133/ofr791242},
  url = {https://pubs.usgs.gov/publication/ofr791242},
  note = {Source identifier: ofr791242}
}