@misc{indiciaec52231f2ae10,
  title = {Geochemical evaluation of upper cretaceous fruitland formation coals, San Juan Basin, New Mexico and Colorado},
  author = {G.E. Michael and D.E. Anders and B. E. Law},
  year = {1993},
  doi = {10.1016/0146-6380(93)90094-r},
  url = {https://pubs.usgs.gov/publication/70018222},
  note = {Source identifier: 70018222}
}