@misc{indiciae1b7b00dedaf1,
  title = {Effects of weathering on biological marker and aromatic hydrocarbon composition of organic matter in Phosphoria shale outcrop},
  author = {J.L. Clayton and J. D. King},
  year = {1987},
  doi = {10.1016/0016-7037(87)90264-x},
  url = {https://pubs.usgs.gov/publication/70014156},
  note = {Source identifier: 70014156}
}