@misc{indiciaecadce184a496,
  title = {Tropical lakes, copropel, and oil shale},
  author = {W.H. Bradley},
  year = {1966},
  doi = {10.1130/0016-7606(1966)77[1333:tlcaos]2.0.co;2},
  url = {https://pubs.usgs.gov/publication/70219934},
  note = {Source identifier: 70219934}
}