@misc{indiciae344103e2282d,
  title = {Organic matter in a coal ball: Peat or coal?},
  author = {Patrick G. Hatcher and P.C. Lyons and C.L. Thompson and F. W. Brown and G.E. Maciel},
  year = {1982},
  doi = {10.1126/science.217.4562.831},
  url = {https://pubs.usgs.gov/publication/70011452},
  note = {Source identifier: 70011452}
}