@misc{indiciae2f179165b523,
  title = {Pyrolysis g.c.-m.s. of a series of degraded woods and coalified logs that increase in rank from peat to subbituminous coal},
  author = {Patrick G. Hatcher and H. E. Lerch and R. K. Kotra and T.V. Verheyen},
  year = {1988},
  doi = {10.1016/0016-2361(88)90372-9},
  url = {https://pubs.usgs.gov/publication/70013706},
  note = {Source identifier: 70013706}
}