@misc{indiciae5bf352713da1,
  title = {Mercury in oil shale from the mahogany zone of the Green River formation, eastern Utah and western Colorado},
  author = {John R. Donnell and Van E. Shaw},
  year = {1977},
  url = {https://pubs.usgs.gov/publication/70233074},
  note = {Source identifier: 70233074}
}